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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to ask my sister to move out now?

65 replies

ThatCleverJoker · 05/08/2026 13:06

My older sister found out her husband had been cheating on her for the last 2 years. She genuinely had no idea, never suspected anything. A couple of months ago he told her he wanted a divorce because he'd met someone else and wanted to pursue things with her. She completely fell apart and just couldn't accept it.

She called me and I told her to come and stay with us for a bit. DH and I have 3 kids ages between 4 to 8 years old so our house is pretty hectic at the best of times, but we have a spare room and I thought a couple of weeks away from everything would help her. Its summer holidays I want to spend some time with just my children and husband on weekends as we both work but on weekends she is in the house moping around.

The thing is, it's now been almost 2 months. I feel awful for her, I really do, but in the nicest way possible I don't really want her living here anymore. It's not that I don't want to support her, and it's not that she wouldn't always be welcome to come over or stay if she needed to again, but our house is busy enough as it is. I have 3 young children, work, a husband and all the normal family stuff going on. I can't be the only person keeping her going.

She's also not without options. She has enough money to rent somewhere if she wanted to. She could also go back to the family home because he's the one who's moved out. My parents have even asked her to move in with them. They live in a 6-bedroom house and it's just the two of them, so she'd have loads of space, but she's refused.

He's made it very clear he doesn't want to work things out. He just wants everything sorted through solicitors. As horrible as that is, there isn't really anything anyone can do to change his mind. She keeps talking about how she can get him back and has even asked me to speak to him, but I honestly don't see what that would achieve. If someone has decided they want to leave and be with someone else, what exactly am I supposed to say?

The atmosphere in the house is starting to affect everyone now as well. She's understandably upset all the time, but it's very heavy. My 4yo has started asking why she's always sad, why she's here all the time and what happened to her house. He can tell something isn't right even if he doesn't fully understand it.
I know she's grieving the end of her marriage and I do have so much sympathy for her, but I also feel like there comes a point where she has to start taking some steps forward. I was expecting her to stay for a couple of weeks, not indefinitely.

AIBU for wanting to tell her it's time to either go back to her house, stay with our parents or find somewhere of her own? I feel guilty because I know she's heartbroken, but I also don't think it's fair on my own family for this to carry on much longer.

OP posts:
bodododo · 07/08/2026 20:23

I think you will have to ask her to move out and give her a deadline to do so. She has options, such as going back to the family home so it's not like she will end up homeless or sofa-surfing with friends.
I think your parents should intervene too and really she should be at te GP if she's not able to eat.
She cannot stay at yours permanently but also you haven't been clear about the timescale because you said she could stay there "for a bit". So now is the time to make the timescale clear.

Oblahdeeoblahdoe · 07/08/2026 20:47

She sounds very fragile, poor thing. Could you ask your DPs to come over and actually tell her she needs to move in with them so you and your family get their home back. They'll have to be quite firm with her.

BruFord · 07/08/2026 20:58

I agree with others that it would be a good idea to ask your parents to intervene. You have alot going on and your children are your primary responsibility. Your parents will have more time to support her and they clearly want to, which is great. She probably just can't face packing up and moving in with them, but everyone can help her.

Good point about her house insurance possibly no longer being fully valid.

Zerosleep · 07/08/2026 22:10

I think you need to be honest with her before it damages your relationship permanently. You need to explain to her that you are always there for her, she is welcome to visit and stay on the occasional weekend when invited but you would like some time alone with your husband and children, and you would like her to move out. I don’t think it’s unreasonable or unfair. I do think it’s unfair to put you and your family through all the trauma and upset of this. She is an adult and needs to start dealing with this on her own.

SparklyLeader · 07/08/2026 22:19

Has she moved out yet?

Delphiniumandlupins · 07/08/2026 22:41

badboss2020 · 05/08/2026 22:05

Have your parents talk to her. They can surely say to her “look you need to leave your sister to get on with her life and come and stay with us”
They don’t have to say you told them to say it.

I think this would be good. She's obviously feeling very down and you don't want to be another person 'dumping' her but it's going to affect your relationship if you start to resent her. Maybe you were planning on redecorating your spare room or have other visitors coming?

Frillysweetpea · 07/08/2026 23:35

I feel sorry for her but she's being unreasonable. I wouldn't expect this highly depressed/paralysed stage to last more than 2-3 weeks. If she won't even distract herself by going out with you after 8+ weeks she needs to see her GP. Yes, it's hard but she has to start doing stuff not just sit around grieving. That includes finding alternative accommodation. You will have to bite the bullet and tell her.

Anyahyacinth · 07/08/2026 23:45

Jen Hamilton is going through similar to your sister..she might be worth a follow for your sister

This post recommends 3 books OP

https://www.facebook.com/reel/26756906823987207

Worth showing your sister there is a community out there for her

1.8M views · 68K reactions | So grateful for all the other women who have walked this path before me Hadley Vlahos | Jen Hamilton

So grateful for all the other women who have walked this path before me Hadley Vlahos

https://www.facebook.com/reel/26756906823987207

dh280125 · Yesterday 00:07

ThatCleverJoker · 05/08/2026 15:54

She has taken time off work, her work is very understanding especially her manager and she's been in civil service for 18 years now so 2 months off sick isn't alarming. She is barely eating or doing much. Over the weekends sometimes we just want to go out with the children we have invited her a couple time she refuses which also makes me feel worse as she really is hurting. She is a very social person, I am very sad for her

But she's not sick. I've been very blue at the end of a relationship, and I speak from experience when I say neither her work nor you are doing her a favour by enabling her not to have to live her actual life. This holiday in misery will go on until wiser minds put a stop to it. You can't control her work, but you can make her go and live in her own place and get on with sorting out the end of her relationship.

MidsummerMadness91 · Yesterday 01:24

Agreed some antidepressants and therapy might help her. She's clearly devastated.

I wouldn't hide behind excuses because she might see through it and that'd hurt more. Kind honesty would be better. Tell her you love her, always here for her, but the kids need normality back before school starts again.

LBFseBrom · Yesterday 01:55

This reply has been hidden

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NoLifeguardOnDuty · Yesterday 05:36

Ahh your poor sister, what a horrible time she's going through.
You sound like a lovely sister and she's really lucky to have you and your parents.

Two months without seeing any change from her initial devastation is a lot to cope with.
I'm assuming you want to go about this sensitively and in a way that doesn't make her feel unwanted.

Could you try and make her see how fortunate she is (in a way) that she has the opportunity to start renting somewhere just for her, and maybe get her excited to get her own things, and go shopping together for house stuff, maybe mention having a sister sleepover at hers when she's settled. How would she react if you were a bit m for blunt and said "Right, it's time we get you sorted. Let's make a plan" so she doesn't think she's doing it all alone and you're there to help?

Or say you thinking parents are worried and want to look after her for a bit and help her decide what to do?
Or ask her outright, so what are your thoughts about going back to the house, let's get the ball rolling and get you back on your feet.

Morepositivemum · Yesterday 06:02

I think it’s time for a nice diplomatic’what do you want to do now?’ kind of talk. It’s not going to be easy because she just wants him but hopefully her own place with some calm and her own space to refind herself might sound like something that’ll help her.

DozyCrow · Yesterday 06:27

I can appreciate your dilemma as it seems your sister is still very distressed if she's not eating and off work sick. Maybe frame it that she needs to spend a little time at your parents to give your DC some quality time with their parents over the school holidays, and ask her to move there this weekend. Then just don't allow her to move back in once the holidays are over. I'd also keep strongly encouraging a visit to the GP to discuss her mental health. Her work may be sympathetic at the moment, but it may not continue much longer.

ChapmanFarm · Yesterday 07:27

Could you perhaps frame the conversation as you don't think your house is doing her any good (which is probably true).

It's not helping her to move on because it's very temporary and with such a busy family life you don't have the time to spend with her that would help her, which is surely the reason not to go home.

So at the moment she's sitting with the worst of all options and it's not wonderful she's struggling.

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