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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to feel drained by my sister-in-law constantly making things about her?

34 replies

Idealist3 · 04/04/2026 22:26

Hi Everyone
This is something I have been thinking about for a while now. I’d really appreciate some outside perspective on this, as I’m starting to feel quite drained and unsure if I’m overthinking things.
I have a long-term friend who is now also my sister-in-law (she ended up marrying my brother). We weren’t especially close in school, but lived together when we were younger and stayed in touch over the years.

Looking back, I feel there has always been a bit of a competitive dynamic. For example, when we were younger and going out, I often had the sense that if I got attention from men, she would imply (subtly) that I was “lucky” and that they were really more interested in her. At the time I brushed this off.

When I got engaged and was getting married, she had just come back from travelling and her behaviour felt a bit off. On my hen and wedding, she was making comments like I’d been very drunk when I met my husband, and generally joining in with my sisters in a way that felt a bit undermining. The night of my wedding, she got together with my brother, which I didn’t think much of at the time, but the following day the focus shifted onto them. A few months later she even joked that they had “stolen my thunder,” which really stuck with me.

Over the years since, I feel there’s been a repeated pattern where if I share something about my life, she brings it back to herself. For example, if I mention my kids, she redirects to hers. When my father passed away and we were holding the wake at home, she told me (but no one else) about a health issue her own mother was having, and I ended up comforting her instead of the other way around.

More recently, I shared in a WhatsApp group that I’m applying for my boss’s job (a CEO role), which is a big deal for me and something I’m nervous about. Her response was to mention her own work situation and how many people she manages, before wishing me luck. When I said I was nervous, she again redirected to her own worries about her children. I came away from the exchange feeling deflated rather than supported.
There are other small examples over the years, but it’s the overall pattern that’s getting to me. I often feel like interactions with her are draining, and I don’t feel particularly supported or celebrated.

Because she’s my sister-in-law, it’s not a straightforward friendship I can step back from completely. But I do find myself wondering if, had she not married into the family, we might have drifted apart naturally.

I suppose my question is: am I overthinking this, or is it reasonable to feel this way and to start putting some distance in place (e.g. sharing less, lowering expectations, etc.) rather than confronting it directly?
Thanks for reading if you got this far.

OP posts:
Superfoodie123 · 04/04/2026 22:33

I have a very close friend like this. All I can say is im very sorry for you as you can't undo her from being in your life due to her now being family.

I do think its a bit weird she got with your brother almost claiming something of yours in a sense.

If I hadn't experienced it myself I may not have got what you'd been saying but I think with competitiveness you just know in your gut when a friend is doing it. And it kills the relationship because in a way you may either compete back when its not in your nature, then you feel gross. Or you start overthinking every action feeling a bit crazy.

Putting distance is not unreasonable at all. I just can't with people who make every conversation come back to them its so frustrating and hard to like that person or listen to them once you've noticed it

Superfoodie123 · 04/04/2026 22:33

I have a very close friend like this. All I can say is im very sorry for you as you can't undo her from being in your life due to her now being family.

I do think its a bit weird she got with your brother almost claiming something of yours in a sense.

If I hadn't experienced it myself I may not have got what you'd been saying but I think with competitiveness you just know in your gut when a friend is doing it. And it kills the relationship because in a way you may either compete back when its not in your nature, then you feel gross. Or you start overthinking every action feeling a bit crazy.

Putting distance is not unreasonable at all. I just can't with people who make every conversation come back to them its so frustrating and hard to like that person or listen to them once you've noticed it

WilfredsPies · 04/04/2026 22:38

You could put a stop to it by asking her if there was any chance that she’d be able to not make it about her, but this would probably cause more problems than it would solve.

In your shoes, I just wouldn’t respond beyond a brief acknowledgement. If you post on a group chat and she responds, just give her a thumbs up and don’t even bother reading what she’s written. If it’s in person, then avoid her completely unless it’s superficial. She’s not going to be someone who’ll give you any form of support. If she makes silly comments like stealing your thunder on your wedding day, then just chuckle, roll your eyes and say ‘yeah, alright then’.

ProfessorRedshoeblueshoe · 04/04/2026 22:41

I have a SIL like this. Last time I saw her I managed to get away with barely speaking to her. I am hoping to not see her again this year. I can cope with 5 minutes once a year

MakesMyHazelEyesBlue · 04/04/2026 22:41

You're definitely not being unreasonable! I had/have a friend like this- we fell out and are now kind of speaking again- but I also have another friend whose face literally lights up whenever something nice happens for me- she is wonderful and life-affirming.
Your instincts never let you down,believe me.
The issue is how to minimise interaction when she's married to your brother. Distance yourself, but be prepared for questions- at which point you gently explain everything you've said here- it may do her good.
She must be basically insecure, but that's not your issue to deal with.

Easterbunnyhaspackedherbasket · 04/04/2026 22:43

Maybe mentally shift her from friend so sil. See her only with db and stop divulging private stuff to her..
I married my best mate's db.. Sadly when we divorced she took his side even though she knew he was a twat.. I missed her more than him when we split..

BadSkiingMum · 04/04/2026 22:47

That does seem a bit pointed.

I would just take everything down a notch. Share a bit less, reply slower, be warm but a bit less open.

HatStickBoots · 04/04/2026 22:50

I agree with @BadSkiingMum and your Sil sounds like a frenemy.

PullTheBricksDown · 04/04/2026 22:51

Distance, distance, distance. Be friendly when you meet her on a surface level but be super busy and keep that to a minimum. I would develop some fake / minor threads of your life to talk to her about, so as to avoid sharing anything important or meaningful for her to appropriate.

ImLeavingWalford · 04/04/2026 23:13

@Idealist3 definitely share less. Start seeing her as your SIL rather than your friend you confide in.

JLou08 · 04/04/2026 23:13

Some people relate to others or show empathy by sharing a similar experience they are going through. It doesn't bother me, I do feel more understood if someone does this with me and I feel uncomfortable if talk is all about me and my life. You're probably overthinking the thing with your brother, do you really think she'd end up in a marriage just to try and upstage you? I don't think she has done anything wrong from what you've written. But there's nothing wrong with her communication style not being what you find supportive either. Stop talking to her about things you want support with but continue to be friendly and civil, as you say there's no ending the relationship really now that you're family.

Hohumitsreallyallthereis · 04/04/2026 23:19

Stop giving her information. Treat her as a sister in law and not a friend. Save the sharing of confidences for your real friends. Basically, create some distance.

iplanonsleeping · 04/04/2026 23:51

Jealousy surely? Only someone who was intimidated or envious of you in some way would be so competitive.
On the other hand, I am a bit guilty of this. If someone tells me something (an anecdote or whatever) I have a habit of bringing it back to me and my experiences and it’s not because I don’t care or I’m being intentionally rude, it’s just how some people interact or engage with a story. Nobody has ever said anything (not to my face anyway) but I’ve picked up on myself doing it a few times and am making a conscious effort to stop.
I would agree in this case though it does sound more pointed and deliberate. The comment about stealing your thunder would really piss me off.
Agree with pp - nod, smile but don’t get into any important conversations with her. If she turns it back to her on a group chat about your job or whatever just give a thumbs up or don’t respond at all. Hopefully she’ll soon get the message.

Unexpectedlysinglemum · 05/04/2026 00:03

Sorry about this this is really sad and sadder you can’t get rid of her.
You can only be boundaries and yellow rock her, don’t be vulnerable with her at all. Keep your relationship with your brother up though but you don’t have to ask her along to everything.

Unexpectedlysinglemum · 05/04/2026 00:03

What are your actual sisters like?

Unexpectedlysinglemum · 05/04/2026 00:05

JLou08 · 04/04/2026 23:13

Some people relate to others or show empathy by sharing a similar experience they are going through. It doesn't bother me, I do feel more understood if someone does this with me and I feel uncomfortable if talk is all about me and my life. You're probably overthinking the thing with your brother, do you really think she'd end up in a marriage just to try and upstage you? I don't think she has done anything wrong from what you've written. But there's nothing wrong with her communication style not being what you find supportive either. Stop talking to her about things you want support with but continue to be friendly and civil, as you say there's no ending the relationship really now that you're family.

Why would she say ‘we stole your thunder’ who even thinks that thought! Why not say ‘I’m so happy that your wedding led to my wedding and we’re sisters now!’ She clearly thinks in terms of rank and comparison and competition. So tiresome and not a good friend attitude.

JLou08 · 05/04/2026 00:18

Unexpectedlysinglemum · 05/04/2026 00:05

Why would she say ‘we stole your thunder’ who even thinks that thought! Why not say ‘I’m so happy that your wedding led to my wedding and we’re sisters now!’ She clearly thinks in terms of rank and comparison and competition. So tiresome and not a good friend attitude.

As a joke. I'm sure there'd be no need to go as far as marrying the man if it was all an attempt at stealing OPs thunder.

Butterbean21 · 05/04/2026 00:32

You can step back. I see my brother in law maybe once every few months and thats quite enough for me. I'm close to my SIL and the kids and see them regularly but do things when I know he is working and when I do speak to him I give the absolute minimal information and keep it all very cordial and excuse myself as quickly as possible. She sounds very insecure and I would find that exceptionally draining.

TheSlantedOwl · 05/04/2026 00:51

Stop telling her anything. Share news individually to your parents/other family members. Stop expecting anything other than point scoring - avoid, grey rock her.

Idealist3 · 05/04/2026 09:05

TheSlantedOwl · 05/04/2026 00:51

Stop telling her anything. Share news individually to your parents/other family members. Stop expecting anything other than point scoring - avoid, grey rock her.

Thanks for this! I never heard of phrase grey rock but this is the best option I think. Otherwise I get drawn in and it’s exhausting

OP posts:
Notabarbie · 05/04/2026 09:07

Yes, I would distance myself from this. You don't need it in your life.

Idealist3 · 05/04/2026 09:07

Unexpectedlysinglemum · 05/04/2026 00:03

What are your actual sisters like?

Wonderful! I have 5 of them and they are very su and we are close. They see similar patterns. SIL gives out about the farm etc and she has done herself no favours.

I hope it doesn’t sound like a typical against the in laws dynamic but she could be better at the family diplomacy. Understatement!

OP posts:
MeetMeOnTheCorner · 05/04/2026 09:16

@iplanonsleepingDo you not think it’s really about having a conversation? Empathy can come from you understanding because you have experienced similar. I don’t necessarily see it as attention grabbing in all circumstances.

However my DH does this. If someone has had an illness, my DH has been worse! They might have had flu and his sniffle is equivalent! His back creaks a bit but he still plays 18 holes of golf twice a week and recently climbed up to Tigers Nest Monastery in Bhutan. Essentially he is fit and ok. But the conversations he has you would think he was decrepit and 90! Yes, it’s wearing and I do tell him to shut up! With sil - don't have a competitive conversation. Don’t expect empathy. However if you talk about your dc, she will
talk about hers. Parents are like this! I’m guilty of talking about mine but when ours went to private schools, we largely avoided the dc topics. You have to read the room which your sil and my dh don’t do well.

Idealist3 · 05/04/2026 22:10

Thanks everyone! The replies have really helped me. I survived Easter Sunday today and basically made sure I wasn’t in the same room at the same time. I think she knew I was distant but honest I was polite enough to mask it and leave her probably wondering. Exhausted by it. Trying to frame it in a kind way and say we all have a different emotional self but I’m tired of being diplomatic but I can’t tell her how I feel. Absolutely no point!

OP posts:
Lobelia123 · 06/04/2026 08:02

Kill her with kindness. Most of the thrill she gets out of the competitiveness/one up mashup is thinking she got one over you and you must be feeling deflated or somehow inferior. So take that away. Oh Sharonnthats WONDERFUL!!! I’m so happy for you / sorry for you / supportive of you. And then carry on with your own fabulous life. Don’t give her the headspace. You obviously take up a huge amount of hers, but that’s her problem