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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:
Lightuptheroom · 18/09/2025 07:14

This happened to my ds, but he was the much younger child. His dad moved very quickly in with a lady with 2 pre teen girls. DS was 4. It was a disaster as the preteen girls didn't want my ex in their lives and definitely didn't want a 4 year old around (even though he was only there every other weekend and some holidays. It was pushed on both ds and the girls that they were now 'family' and the girls were his 'sisters' Even had the classic of ex telling ds that new lady was his 'new mummy' Fast forward to now.... Daughters left their 'home' by age 16/17 and went to live with their dad, DS is now 23 and cut contact with his dad when he turned 18. Ex also has a big thing about not giving money to DS whilst giving lump sums to his step daughters.

Your sister knows what she's doing, I'm afraid your BIL needs to step up far more and give his children a space to be away from the mess that's being created. 50/50 with teens is a very feasible option.

Your sister isn't interested in listening to opinions, I wouldn't be surprised if there was a baby on the way soon. All you can do if you're able is have her children as much as possible/if they wish to come and encourage their dad to step up. Paternal grandparents is tricky as your sister is unlikely to agree to them having time with your niece and nephew unless dad finds a way to step up.

Citrusbergamia · 18/09/2025 07:11

No advice OP but this sounds familiar to a situation my close friend has with another of her friends.

As a distant person, watching from the sidelines you just know how it's going to pan out and the kids are all going to be affected in 1 way or another. She just can't (won't) see it because she's blinded by her selfishness to have a fake 'aren't we a wonderful blended family and I'm far happier than you are' vibe.

If she's any decent mother, she'll rue the day she did this to her kids...and it'll all be too late. All you can do is offer support to your niece and nephew and a safe space for them.

Cantyouseethishorselovesme · 18/09/2025 07:10

Ladamesansmerci · 17/09/2025 23:47

You're obviously not unreasonable. These poor children have had to get used to living without their dad in the home, and now have a whole new 'family' to get used to. They absolutely need 1:1 time with their mum.

Your sister should have just dated Ben and lived in separate houses. They've blended far too quickly, and it's not fair that the 14yo has to share with a girl who is not her sister.

Totally agree here. Ben complained about his own place being too small, and Sis jumped straight to inviting him and his kids to move in. She then used the available space to accommodate them, making her own children's feelings and needs less important.

The whole gift situation is another example of her trying desperately to force everyone to treat these new kids as part of the family. People aren't responsive to that idea because, frankly, they are not family.

Your sister probably won't wake up unless the relationship ends, and she finds she can't stick the original pieces back together. Then she'll be like, 'Why didn't anyone tell me to take things more slowly?"

WatchingTheDetective · 18/09/2025 07:09

All four children have been badly let down by their parents. The mother of the other children is behaving outrageously, letting them live with a man like this in a two bed flat. The father is a complete cock lodger. He really saw the signs when he saw that four bedroomed house. Your sister's husband knows the children are unhappy but doesn't see them more. He doesn't give them the alternative to live with him. Your sister is sacrificing her own children's life for the sake of her having a boyfriend, even though that boyfriend is completely useless. She must be insane to think of marrying him and risking losing her home.

Personally I would be asking the children if they wanted to live with you.

Imisscoffee2021 · 18/09/2025 07:09

This is so sad. I was a similar age, about 11 ir 13 I think when my stepndad moved in. His kids were grown and didn't live with us but my mum still sat us down alone with her and asked us if it was okay if he moved in (they had been together a year or so) and I can still emphatically remember her saying seriously that if we didn't want him to, he wouldn't. That we'd always come first. What a pity your sister has moved someone in so soon and with no thought to her kids.

HappyHedgehog247 · 18/09/2025 07:09

The one much more to blame here is Chloe and Noah's dad.

TheaBrandt1 · 18/09/2025 07:08

See this with acquaintances on Facebook marriage ends then there is one of them gurning away with a new partner and huge tribe of unwilling pissed off teens “blended”
together 🙄. Some have 3 each so shove 6 kids together. Surely most kids absolutely hate this.

BettysRoasties · 18/09/2025 07:08

Poor kids. Your sister won’t hear it though. As long as she’s got her man. Can’t stand women who put dick before their kids. She will be on grabs net eventually. Why won’t my adult children talk to me wah wah wah.

The dad needs to step up, get help off his parents to be closer and get more time. Both are the parents are pretty crappy let’s face it.

Lest they have you and the grandparents.

WonderingWanda · 18/09/2025 07:06

I cannot fathom how your sister has let this happen. She has a 4 bedroom house. Her own children should have their own rooms in their family home
.

She should not have introduced a new man so soon after knowing him, moved him in or blended the family so quickly, this will be hugely damaging for all the children. She and her new boyfrienf sound completely irresponsible.

I feel so sorry for her kids. Does her ex have any claim over the house? I wonder if he could pursue the issue of his kids needing their own rooms? If I were you I would try and keep in touch with the kids and let them know they are welcome at yours whenever.

PosiePerkinPootleFlump · 18/09/2025 07:03

It sounds as though you are never going to be able to persuade her that Ben and his kids should move out (even though they clearly should). At the very least, Josh and Sara should share a room so that Chloe and Noah each have their own rooms. That is probably still manageable whilst Sara is still primary age at least, and I suspect after that Chloe will have moved to her dads or in with you or something to escape

Theroadt · 18/09/2025 07:01

minipie · 17/09/2025 23:33

Unfortunately your Dsis probably already knows underneath that this is hurting her kids, but has chosen to put herself first. I don’t think you pointing it out will make any difference so in a sense it’s pointless saying it. I don’t disagree with you though.

This. The real hurt is not the sharing etc but that she is not putting her kids first. Incredibly selfish. Is there a way you can offer them a haven in your house? Their own space they can occasionally retreat to, away from their steps?

TheaBrandt1 · 18/09/2025 07:00

When you are an older person looking round for support your niece and nephew will be there for you.

FlamingoQueen · 18/09/2025 07:00

I would go and speak to their school safeguarding lead. They must be showing signs of being miserable at school.
I really feel for you and please remember that the children are lucky to have you and their grandparents on their side.

cheesycheesy · 18/09/2025 07:00

Some people will do anything for d. Disgraceful. Her whole personality revolves around being with someone. I expect she’ll she having children with this new muppet if she can and pushing her kids out even more. All you can do is be there for them

Itsanewlife · 18/09/2025 06:58

PoshestPaws · 18/09/2025 02:07

I think my sister is feeling a bit desperate to be blunt.

She was always desperate to get married and saw it as a huge achievement, she was married very young and was before that she was training for a great career, had a good social life, hobbies and friends.
As soon as she was married she ended her training and had an obsession with having babies and didn’t want to do anything without her husband.
The sad thing is even after the kids came along they always came second, she was constantly trying to find for someone else to look after them and used to beg my parents to have them and just drop them off when they said no.

When her marriage ended I know she felt like she had failed life so she was trying to meet someone else straight away, her behaviour now shouldn’t really surprise me, she is obviously terrified of another relationship ending and will do anything to hang onto it. It’s just heartbreaking it’s at the expense of the happiness of her kids.

Because I spent years with her telling me how I must want what she had and questioning if I had fertility issues it makes it even more difficult now because it just convinces her that I must be jealous when I say anything she disagrees with.

I wish she had spent some time on her own focusing on the kids, they need to be her priority and I don’t like interfering.
I’m scared she’s going to end up being completely taken advantage of because she will do everything to hang onto Ben, until they actually get married I don’t think she will feel secure and I have wondered a few times if she’s doing everything to show him what a good wife she will be and stepmum.
I feel like he’s completely aware of her insecurity and used it to move into her house and is the ultimate cocklodger, I definitely don’t trust him.

Gosh, this does smack of desperation and insecurity! The poor kids. I don't think the insecurity is going to end when she is married to Ben. After all her first marriage did end. She needs therapeutic help to figure out why her whole sense of identity is tied up with nabbing and keeping a man. Well done on you for not falling prey to whatever caused her insecurities!

Blended families are a fact of life and the efforts she is making with her step kids would be lovely if it were several years further down the line, her kids had had a chance to get to know and like Ben and his kids, and were on board with the idea of their moving in. And, even then, they would have to be given some agency and choice in how and when this happened and on what terms. The way your sister has gone about this is awful to them, and not likely to end well. Sorry :(

Autumn38 · 18/09/2025 06:56

I think all you can do is give Chloe and Noah a haven with you. Let them know they are welcome any time. Keep planning times for them. Suggest Chloe can have her friends at yours? Could you offer her to have a sleep over with them- order pizza and let them take over the tv? I’m sure she’d love that and remember it forever.

CopperWhite · 18/09/2025 06:53

Your niece and nephew will love you and be grateful to you for the rest of their lives for sticking up for them.

NameChange23456790 · 18/09/2025 06:50

How did she end up like this OP? I’m curious as to why she was so desperate to get married and have kids? And why do you think she was so keen to get into another relationship?

usedtobeaylis · 18/09/2025 06:49

Iocainepowder · 18/09/2025 06:43

Bollocks.

Op i had a shit situation involving my parents when I was a teenager and I could have only dreamt of someone like you around to see and acknowledge what I was going through. Thank you for being a good aunt.

Your sister needs to understand that taking her kids on holiday doesn’t mean she is a great mum. I’m sure the kids would sacrifice 3 holidays if it meant they didn’t have the step kids around.

Your sister is an arsehole and yes please do show her this.

I agree. I had an auntie who pretended not to see and spent years saying 'if I had known'. She did know. The OP knows and is currently the only one who seems to care about her niece and nephew.

Komododragonchocolatecoin · 18/09/2025 06:47

This happens all the time, it happened to me as a child and it was dreadful, won't go into details but fairly similar.

You know what they say "no one falls in love faster than a man who needs somewhere to stay". (I mean technically he had a place already but sounds like he's landed on his feet here).

I hope everything works out, all you can do is be there for niece and nephew.

usedtobeaylis · 18/09/2025 06:47

YANBU. I don't understand why people do this to their children.

Sunburstclocklover · 18/09/2025 06:43

3pears · 18/09/2025 00:05

I feel very sorry for Chloe and Noah. I do think their dad could maybe step up and have them living with him to get them out of the situation they’re in. Your sister is being extremely selfish

This! Their dad needs to step up too. I know OP said that he's not the most involved but if his kids are uncomfortable and miserable in their own home he has the most options here to either have them full time or at least have them more than EOWE.

Iocainepowder · 18/09/2025 06:43

Rayqueen · 18/09/2025 01:28

I would say stop butting in your neither of any children's parent here and it's none of your business. Siblings have exactly the same grouches so nothing new there when sharing rooms or doing day activities depending on which ages it's for. The fact they've got an aunty sticking her nose in instead of being neutral between all and a good friend then I wouldn't want you around tbh.

Bollocks.

Op i had a shit situation involving my parents when I was a teenager and I could have only dreamt of someone like you around to see and acknowledge what I was going through. Thank you for being a good aunt.

Your sister needs to understand that taking her kids on holiday doesn’t mean she is a great mum. I’m sure the kids would sacrifice 3 holidays if it meant they didn’t have the step kids around.

Your sister is an arsehole and yes please do show her this.

Lafufufu · 18/09/2025 06:40

Your sister sounds totally captured so you are wasting your time.

Her behaviour is WILD and not something I would ever do.
This includes but isnt limited to:
Introducing a new man so early
Introducing his kids so early
Moving them in so early / all.
Not making his kids share.
Ignoring their happiness
Making my children de facto childcare
Deprioritising my children in general
Letting myself get mugged off by some Cocklodger.

Focus your energy on her kids. They are big enough to vote with their feet.
Offer the kids a safe space and take them out regularly.
They have phones so stay in touch and dont slag off their mum even if they are complaining - stick with bland stuff like "that sounds really hard"

Poor chloe in particular.... shes about to start GCSEs... if you are nearby and can offer a place to study i would.

jeaux90 · 18/09/2025 06:39

Your BIL is an asshole.
Your DSIS is a selfish idiot.

Imagine riding over your kids well being and boundaries for a man.

We have only just blended our house after 5 years!! Our DC were the right age now to do that with one going to uni and the other off to sixth form college.

Blending families is a really serious business especially when they are the opposite sex and you have teen girls.

Hon Appalling behaviour from all the adults who should know better. And the new BF sounds like a CF cocklodger.