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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

For telling my sister blending her family is hurting her kids?

281 replies

PoshestPaws · 17/09/2025 23:21

I named changed for this as it’s very outing but despite changing small details it’s probably very recognisable. It might be the best way of getting through to my sister depending on people’s comments so it’s possible I’ll show her anyway.

My Dsis is currently refusing to speak to me because I was sick of saying nothing whilst my niece and nephew were becoming increasingly miserable with their home life.
I gave her some home truths which she refuses to accept and thinks I’m just jealous.

Dsis split up with my BIL 3 years ago and he has the kids EOW, he probably could have them more but he wasn’t the most involved father, I think that’s a lot of what caused the split.

Dsis met a man called Ben just over a year ago who has two kids Sara 8 and Josh 5.
My Niece Chloe is 14 and my nephew Noah is 12 they met Ben and his kids about 5 months into the relationship.
Ben is the RP of his kids as according to Dsis his ex wasn’t keen on being a parent and really struggled. There is no custody agreement in place as she travels a lot for work but sees the kids fairly regularly for a few days at a time and she had them a lot over the summer.

Shortly after they all met my Dsis said they were all moving in together as Ben was constantly complaining about living in a two bedroom flat and I think he manipulated Dsis by saying how much happier the kids were at her house and how much better it would be if they were all together, Dsis lives in the family home after BIL moved out which has 4 bedrooms, she made what seems a strange decision to me for Sara and Chloe to share.
Her reasoning was that Chloe had a big room and girls would have more in common with each other than if the boys shared. She also she said Josh went to bed and got up much earlier than the other kids so was better in a separate room.

Chloe absolutely hates sharing a room and says Sara uses her things and loses and breaks them, she has no privacy and has no private space to spend time with her friends and she hates Sara wittering on at her through the night and constantly wanting entertaining.

My sister constantly expects her kids to amuse the other children and they no longer really get any one on one time with her anymore. On days out things are often tailored for younger kids and they feel like they have been pushed aside, they told me that they feel so relieved when they stay with their dad and their grandparents on his side, my mum and dad are no longer alive so they are their only grandparents.

I feel like my Dsis is often using her own kids to have a break and alone time with Ben, I have offered to have my niece and nephew frequently as I don’t have any children so it’s a chance for them to get undivided attention, I suggested having them separately and together and planning some trips and days out.
One of the biggest reason that caused us to fall out is that my Dsis wants me to regularly have all the kids so I can get to know her “step kids” and help them all to bond, this also means she can go away or have nights out with Ben. I said absolutely not! I’m not looking after young kids I hardly know and it’ll just cement even more to Chloe and Noah that they are being pushed aside for virtual strangers.

The whole situation is a mess but Dsis just can’t see it, my niece and nephew have given up trying to talk to her as she just says to “give it time” and when I accused her of neglecting her kids she points out they have a roof over their head, clean clothes and food, they get holidays and days out but mostly that they are loved. I do know she loves them but she’s always been selfish and my parents constantly had the kids when they were alive. I think my niece and nephew are so used to not having their parents attention that they don’t know any better and know complaining gets them nowhere so they are just becoming increasingly miserable.

Chloe and Noah’s grandparents on their dads side are also very worried and becoming frustrated with my Dsis for putting a man first, they told me they have tried to get their son to do more but he works shifts and often nights and doesn’t have much space or live as close to their schools or friends. Their grandparents were especially angry when they asked my Dsis what the kids wanted for Christmas and she gave them suggestions but also included expensive gifts for the other kids! They said they were happy to buy some small token gifts but they aren’t spending less on their own grandkids to buy for kids they don’t know.

I know my niece and nephew aren’t keen on Ben and didn’t want to live with another man they hardly know, Chloe especially said she finds it uncomfortable. They also hate how noisy and chaotic the house is and how it’s constantly in a tip when my sister loved a calm clean and tidy house before. Chloe and Noah are quiet kids but Josh is a typical rowdy messy 5 year old, Sara is constantly singing and dancing and pestering Chloe to watch her or make up dances with her, if Chloe has friends round then Sara won’t leave them alone so her friends have stopped visiting as much. None of the kids want to entertain Josh so he has constant control over the tv, if the channel is changed he has huge tantrums.
I hate spending time in that house now so can’t imagine how awful it must be to live there!

I posted on here for traffic and I don’t really need to ask if I’m BU, I wanted advice more than anything- especially from people who have been in a similar situation. Did you keep quiet or risk blowing your whole relationship apart by telling some home truths?

I apologise for the length of the post, I didn’t mean for it to be so long but didn’t want to drip feed and thought if I included as much information in the OP then I don’t have the same questions asked over and over because the answers get missed and people sometimes just just read the OP.

OP posts:
SkaterGrrrrl · 18/09/2025 21:56

You sound lovely OP.

I have a sensitive, introverted 14 year old DD, she needs time alone in her room to recharge her social battery after a busy day peopling at school. Nothing makes her happier than decompressing on her bed with a pile of books and the cats, journalling and listening to music.

I am trying to imagine squeezing another bed in there and telling DD a younger child will be sharing her sanctuary.... She would be utterly devastated.

MoralHighgroundersNeedToGetALife · 18/09/2025 22:12

padronpepper · 17/09/2025 23:34

Are those their real names?

…And that’s your take-out from all of this?

Yourcatisnotsorry · 18/09/2025 22:36

Sister is very selfish. I’m not sure what you can do other than keep being a great aunt to your niece and nephew.

llizzie · 18/09/2025 22:41

Why bother about them? Leave them to their own lives and get on with yours. There is nothing you can do in situations like this, especially as it is so complicated.

Let them get on with it. If they make a mess of their lives, they will learn from it. If it succeeds, so much to good.

If you interfere, if it doesn't work, you will get the blame. They won't thank you if it does work out, so why bother?

Needspaceforlego · 18/09/2025 22:47

Because someone has to care about her two kids. Op and their grandparents are the sensible people in their lives.

Rightsraptor · 18/09/2025 23:38

Your ex BIL could be key here. The original plan was to sell the house then presumably there would be two new properties - one for your sister and one for him, and they'd each be smaller than the current house. Your BiL didn't push on with this to enable their children to remain in their home.

So how does he feel about this new man moving in, especially being around your niece? I suspect most men wouldn't be happy effectively surrendering their home to another man. Your BiL's laudable aim of stability for his children is shot to pieces by your sister's behaviour too. Was there any arrangement in the divorce proceedings about the sale of the house?

So I'd work on him if I were you, get him to see how crap the situation for his children and persuade him that this is the time to sell the house as he needs a better place. Then watch Ben move out when he realises his cocklodger days are over.

TeddySchnauzer · 19/09/2025 00:23

Yeah this is why I don’t believe in blended families, I personally think it’s wrong but each to their own. Those poor kids…. 💔

TeddySchnauzer · 19/09/2025 00:25

llizzie · 18/09/2025 22:41

Why bother about them? Leave them to their own lives and get on with yours. There is nothing you can do in situations like this, especially as it is so complicated.

Let them get on with it. If they make a mess of their lives, they will learn from it. If it succeeds, so much to good.

If you interfere, if it doesn't work, you will get the blame. They won't thank you if it does work out, so why bother?

Why bother about them?!?! Huh? WTF they’re OP’s niece and nephew!

llizzie · 19/09/2025 02:13

TeddySchnauzer · 19/09/2025 00:25

Why bother about them?!?! Huh? WTF they’re OP’s niece and nephew!

Yes they are, and they seem to be making her life far too complicated and it is my opinion that she might be better to leave them to it and have a quieter life.

As I said, they will not thank her for interfering whatever the result is.

TheaBrandt1 · 19/09/2025 06:44

Are you the sister? Of course she won’t want ops interference but the kids will likely appreciate it

Screamingabdabz · 19/09/2025 06:51

She can play ‘happy families’ now but what will happen is that when her kids are old enough to leave they will run away to uni (or wherever) and never look back. They won’t forget or forgive the misery, and the selfishness of their mother choosing dick over their comfort.

cloudtreecarpet · 19/09/2025 06:52

llizzie · 19/09/2025 02:13

Yes they are, and they seem to be making her life far too complicated and it is my opinion that she might be better to leave them to it and have a quieter life.

As I said, they will not thank her for interfering whatever the result is.

What a sad view. The OP is clearly a caring aunt who is worried about the impact her sister's selfish behaviour is having on her niece & nephew.
She's part of their family so of course she should be involved & advocate for them where she can.

wfhwfh · 19/09/2025 09:38

llizzie · 19/09/2025 02:13

Yes they are, and they seem to be making her life far too complicated and it is my opinion that she might be better to leave them to it and have a quieter life.

As I said, they will not thank her for interfering whatever the result is.

But the niece and nephew aren’t “making her life far too complicated”. In fact, they aren’t doing anything; they’re having things done to them. By her sister and some random deadbeat dad.

If everyone in the scenario was an adult, I’d 100% say stay out as people choose different lifestyles and can tolerate different things, etc. But the niece and nephew are children whose needs are not being considered at all by the mother.

Id be getting involved if I was in OP’s situation. Even just to let the children know someone recognises their lives are being trampled on and is on their side

Northernandproud89 · 19/09/2025 09:39

I wonder would it be worth encouraging your niece and nephew to write their mum a letter outlining how they're feeling and what changes they would like?

Doesn't work with selfish women like this I'm afraid. She either won't care, or will go on the defensive and cry "don't you want me to be happy? I deserve to be happieeeeeee!!" 🙄

Rightsraptor · 19/09/2025 10:13

I agree that writing their mother a letter won't make any difference. She's clearly one of those women who have to have a man in their life, come what may. She'll gloss over any problems, as she's doing now 'it's still early days'.

OP's hands are tied really, unless she can get her BiL to take action. All she can do is offer support whenever possible to her niece & nephew.

JoBrandsCleaner · 19/09/2025 13:46

I actually can’t stand people like your sister.
the kids need you though so I wouldn’t do anything so that they end up loosing you.

Cloudtime · 19/09/2025 14:39

Your sister is being entirely selfish. I would guess she rationalises it in her head along the lines of ‘what about me? ‘ ‘Aren’t I entitled to a life ?’
Your niece is starting GCSE’s and should absolutely have her own space. The only fair solution would have been to have the youngest 2 in together and to put firm boundaries about other people’s space and belongings .
I say this a divorced parent of 3. My relationships are separate to my children unless it’s going to enrich their lives in some way. I have not had a situation yet where I believe moving someone in would benefit the children and so it has no happened even though it would undoubtedly have been fantastic for me . They need to feel their home is their safe place and they need to feel totally comfortable in it.
Does she asked her step children’s relatives to buy gifts for children ? She’s trying to force relationships that aren’t there yet .

thepariscrimefiles · 19/09/2025 15:16

llizzie · 18/09/2025 22:41

Why bother about them? Leave them to their own lives and get on with yours. There is nothing you can do in situations like this, especially as it is so complicated.

Let them get on with it. If they make a mess of their lives, they will learn from it. If it succeeds, so much to good.

If you interfere, if it doesn't work, you will get the blame. They won't thank you if it does work out, so why bother?

Why should OP bother? Because she loves her niece and nephew and can see that they are getting a raw deal. Her niece, especially, is very unhappy.

It's fine for adults to mess up their own lives, but when it negatively affects the children as it does here, other people should step if they can.

Bananalanacake · 19/09/2025 15:28

Why can't she have a relationship with him without living together, the 2 sets of DC don't even have to see each other if they don't want to.

SeaShellsSanctuary1 · 19/09/2025 15:46

Why are you getting involved with your ex brother in laws parents. That is far too invested. They need to sort out there absent son who only sees his kids EOW.

Northernandproud89 · 19/09/2025 16:39

I would guess she rationalises it in her head along the lines of ‘what about me? ‘ Aren’t I entitled to a life ?’

This is what I was getting at in my previous comment. I don't have or want kids, but as someone who had an unstable upbringing, I care about children's welfare a lot. I'm of the opinion that once they arrive, their needs come first. End of.

PotatoLove · 19/09/2025 17:03

Your sister sounds extremely selfish.

PoshestPaws · 19/09/2025 22:14

Rightsraptor · 18/09/2025 23:38

Your ex BIL could be key here. The original plan was to sell the house then presumably there would be two new properties - one for your sister and one for him, and they'd each be smaller than the current house. Your BiL didn't push on with this to enable their children to remain in their home.

So how does he feel about this new man moving in, especially being around your niece? I suspect most men wouldn't be happy effectively surrendering their home to another man. Your BiL's laudable aim of stability for his children is shot to pieces by your sister's behaviour too. Was there any arrangement in the divorce proceedings about the sale of the house?

So I'd work on him if I were you, get him to see how crap the situation for his children and persuade him that this is the time to sell the house as he needs a better place. Then watch Ben move out when he realises his cocklodger days are over.

I can’t really go into too much detail about the selling of the house, partly because I’m not 100% sure about the details and partly because of how outing it is (although I think we are well past that stage!)

When my parents died my sister used her inheritance to pay off a lot of the mortgage and our parents also helped with the deposit on the house. I think due to this she would get most of the money when the house sells.

I imagine if it was a straight 50/50 split and my BIL had equal say then he’d have fought more about her moving Ben and his kids in.

My sister and BIL were together from a very young age and my sister isn’t the nicest person in all honesty. My BIL adored her and she knew and weaponised it, he’d have done anything to make her happy and I think he still loves her and is doing the same.
Due to his insecurity the kids came second in that relationship as well and he never said anything when my sister sent them constantly to both sets of grandparents, friends houses and they spent a lot of time at my house. My niece and nephew know they have never been a priority so it’s probably useless for them to try to get my sister to suddenly put them first.

My BIL loves his kids but wouldn’t have a clue how to spend quality time with them, if they had been younger I’m not sure if he’d have coped having them alone.
Whenever he had time off it was spent with my sister who organised time alone for them together and trips away. My Dsis did most of the caring for them and when he finished work he’d go to his room to relax and my Dsis insisted they gave him time alone to “wind down” it’s literally all about making men happy for her!
I know my BIL is working hard doing extra shifts to pay for rent on the flat as well and had to furnish it, I assume he’s paying maintenance for the kids but I don’t know how that works. He has said he can’t let my Dsis live in the house and have 50/50 with the kids as it’s not financially possible.

I don’t think Ben is paying much to Dsis because she’d make sure she told me if he was generous with money. I asked about them moving to a bigger house and if he was going to contribute so they could get somewhere with enough bedrooms for all the kids, she just brushed me off and said she wants to get married again before anything else, hopefully this means she’s at least being savvy enough to have financial independence.

One of my concerns was a pregnancy announcement, luckily my Dsis shuddered when I asked that and said no chance she is giving her freedom now.
I wasn’t that worried about it because without our parents help raising another baby I knew she wouldn’t want another child in the way of her relationship.

I noticed a pp said that Chloe could give up her room so that Josh and Sara could share the bigger room and she could have her own again.
I actually think this would be worse, Chloe spent a lot of time designing and decorating her room and talked about wanting to be an interior designer she enjoyed it so much. She has done a beautiful job and has a lot of books so half the room was full of bookcases that were designed and fitted to display her books, she lost most of those when she lost half her room which was heartbreaking and one of the only times I saw her lose her temper and fight back against Ben and the kids moving in.

The room Josh is in is tiny and was previously an office, it just has room for a single bed and a big cupboard being used for wardrobes, she couldn’t fit her desk in to do any studying - although she never has peace to do it at home now.
I have given Chloe a key to my house for if she needs space or peace to do homework, even if I’m on nights she can let herself in when I’m asleep. I have only just done this and Dsis doesn’t know yet.

I have spoken to my sister again since posting about dividing the room but she just gives me a “fuck off” nod and smile and changes the subject. She won’t divide the room because if Sara isn’t pestering Chloe then she will pester my Dsis and Ben and my sister hasn’t the patience.

I know it’s not a nice thing to say about a child but Sara is very annoying. I know she’s 8 and had a lot of upheaval but I think most of the experience has been positive for her and she’s thriving off having attention she didn’t have before.
I’ve stopped interacting with her as much as possible because it encourages her, she wants everyone to watch her dancing or singing and tries to play fight or grab hold of me if I tell her I’m busy talking to my Niece and Nephew. She started calling me auntie as well but I knocked that on the head straight away.

I know these are long posts but I think I needed to get some of it off my chest! I have to be careful about being too negative to my Dsis or to anyone who might tell her what I’ve said, I don’t want her to stop me seeing Chloe and Noah and she will if she thinks I’m questioning her decisions too much. I was wary about posting publicly on this site but she takes the piss out of mumsnet saying there is more to her then being a mum and she doesn’t feel the need to spend her time interacting with strangers about breast feeding and prams so I think I’m safe!

OP posts:
llizzie · 20/09/2025 01:19

Has your DS actually asked you to help in the situation. I ask because you say you are not 100% sure of information.

I am sorry if I have misunderstood. You seem to have taken upon yourself a thankless task.

BruFord · 20/09/2025 01:44

My BIL loves his kids but wouldn’t have a clue how to spend quality time with them.

With all due respect, how do you know that he wouldn’t have a clue how to spend quality time with his children? I’m sure he can work it out, plus at 14 and 12, they can tell him what they’d like to do.

You’re starting to sound rather judgemental tbh.

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