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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:
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.

padronpepper · 17/09/2025 23:34

Are those their real names?

RightOnTheEdge · 17/09/2025 23:35

YANBU. It sounds awful for the kids.
I feel really sorry for Chloe having to share a room with a much younger girl. She doesn't even have her own room to escape to for some peace and privacy.

There's not much you can do though if your sister doesn't care.
You just have to keep being there as much as you can for Chloe and Noah.
My sister has had a string of awful boyfriends. My oldest neice even moved in with my mum and dad because she didn't want to live with one of her mum's boyfriends.
My sister has had a lot of trouble with her youngest now that she's a teenager and can't understand why she's rude to her and they are not close.

Some people will always put their relationships before their kids.

MotherOfRatios · 17/09/2025 23:38

You might want to report and remove their names it's not fair to the kids tbh

minipie · 17/09/2025 23:40

She says in the OP she’s changed small details, I imagine that means the names aren’t real

SkaneTos · 17/09/2025 23:41

My guess is that those are not their real names.

saraclara · 17/09/2025 23:42

Given that she's changed her own handle for privacy, I'll be surprised if she hasn't changed theirs!

Itsanewlife · 17/09/2025 23:42

It does sound like Chloe and Noah are getting short changed. They've had a lot to deal with in their young lives - having this parents separate, mom have a new partner and now to share their home/space with another man and his children. It is a lot to expect from kids that are already dealing with lots of change. Forcing relationships with other kids or adults is not the way.

Also, forcing Chloe and Noah's grandparents to buy gifts for her step kids is very odd behaviour. Honestly, your sister sounds like she is not just putting herself first, she's also bending over backwards to ingratiate herself with her new partner and his kids - smacks of a little bit of desperation (rather than niceness!) and is definitely at the cost of her kids (and relationship with you!).

SkaneTos · 17/09/2025 23:42

I agree wtih @minipie and @RightOnTheEdge .

Itsanewlife · 17/09/2025 23:45

p.s. also all this on the strength of a year's relationship? Not the actions of a person protecting her kids (and herself) from fresh emotional upheaval!

Crochetandtea · 17/09/2025 23:45

Your sister is selfish. Moving a new man into her home with her two young children is incredibily naive tbh. Her need for a man in her life is more important to her than the welfare of her own children?
If I was the daughter I’d speak to a trusted adult at school and explain everything that’s going on at home. No child should feel uncomfortable in the one place they should feel the most safe.

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.

YankSplaining · 17/09/2025 23:48

I think you were unreasonable to think that “giving her some home truths” had any chance of changing her behavior.

youalright · 17/09/2025 23:49

Yanbu you are sticking up for your nieces and if you don't say something who else will

Itsanewlife · 17/09/2025 23:51

YankSplaining · 17/09/2025 23:48

I think you were unreasonable to think that “giving her some home truths” had any chance of changing her behavior.

True, but on the other hand she did have to stand up for her niece and nephew. Somebody has to put the kids first.

Well done, OP, for standing up for them, and offering to give them some one on one time (also very strange for your sister to expect you to have her step kids too!)

BauhausOfEliott · 17/09/2025 23:58

It’s hard enough for a 14-year-old to share with an 8-year-old even when it’s their own sibling, let alone when it’s a kid they have zero connection to. I feel so sorry for Chloe - I think most teenagers would massively struggle with this. There are numerous reasons why privacy is important at that age. The thought of never being able to get away from some annoying kid in your bedroom when you’re 14 is horrible.

Your sister is putting her boyfriend over her kids and it’s shitty behaviour on her part. Obviously none of this is Sara and Josh’s fault - I feel sorry for them too - but your sister and Ben are being absolute arseholes.

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

Francestein · 18/09/2025 00:06

Can Chloe move in with you? She’s old enough to chose. Maybe Josh could do after school with you two then.

NoSoapJustUseShowerGel · 18/09/2025 00:18

Wow I feel so sorry for your niece and nephew, how awful for them. Your sister is being incredibly selfish. No advice but you were right to talk to her about it, somebody needs to advocate for her children, whose feelings and wellbeing she has disregarded in favour of a man she barely knows. (Obviously even if she’d known him a lot longer then her children should still come first.)

Adarajames · 18/09/2025 00:48

Had a similar situation with my cousin and their kids when he got a new partner with multiple younger kids than his own. His own kids ended up moving out to live with an aunt once they hit mid teens, if you have any way of having Chloe to even stay for some of the time with you, maybe you could offer her that? Some people just shouldn’t be parents, they are far too selfish and the kids bear the brunt of it.

Needspaceforlego · 18/09/2025 00:52

Sounds like your sister is desperate and got herself a cocklodger.
If you could are you able to offer Chloe time at your house, or help facilitate her be at her Dads.

Im assuming shes in the English school system is this her at the start of her GCSE years?

ACynicalDad · 18/09/2025 00:55

That’s awful poor girl, what a selfish mother. Moving on far too soon and accepting totally unacceptable circumstance for her kids. If they must line tougher two small siblings should change and they should get builders in/move in the next 2-3 years. But hope for the nieces sake the relationship doesn’t last.

PoshestPaws · 18/09/2025 01:02

padronpepper · 17/09/2025 23:34

Are those their real names?

No I’ve changed all names

OP posts:
Ellie56 · 18/09/2025 01:08

Your sister is a selfish cow and a shit mum.

Those poor poor kids. I feel especially outraged on Chloe's behalf. What teenager wants an 8 year old taking/breaking her stuff, invading her space and hanging round?

As PP said privacy is very important at her age and she should be able to spend time with her friends in her own space. No wonder her mates don't come round much. They don't want to spend time with the annoying kid either! And bringing a new man into her home where she should feel safe is grossly unfair too.

Maybe you could let her spend time with friends at your house? Or is there any way she could come and live with you or with her grandparents at least for some of the time?

Rose74 · 18/09/2025 01:09

That's so sad for your niece and nephew, no wonder they're unhappy. I'm not sure what you can do really, is your sister stopping you seeing your niece and nephew because you won't babysit the other kids as well? At their age they are old enough to decide for themselves and make their own way to your house really if you live nearby. You could just invite them to come round to yours after school or weekends whenever they want if you were comfortable with that. Your sister sounds very selfish, but you sound like a lovely aunty, I think if the kids know they have you to talk to that has to help. It sounds like their dad's pretty selfish too.

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