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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To cut contact with my heavily pregnant sister?

122 replies

QuickScroller · 03/01/2025 15:27

My DS has always been a challenging person, and it’s only gotten worse over the years. Growing up, she caused my parents a lot of stress. One particular memory that stands out is when, as a teenager, she threw my DM’s phone into a pond and destroyed ornaments that she had bought my DM for Mother’s Day, which were meant to be sentimental gifts. Our dad passed away in 2016, and I’ve always had a stronger relationship with my parents. I enjoy spending time with them, but my DS never did, which led to jealousy. She’s often accused me of being the “favourite,” which has led to a lot of bullying behaviour from her. She would lie about things to make me look bad—one time, a couple of years ago, I asked for a £40 jacket for Christmas (our budget was £50), and she told my DM I’d asked for a £150 one, even though I had shown my DM the link to the £40 jacket, just to make me look bad.

Fast forward to now—she’s 33, I’m 29, and she’s pregnant with her first DC, due in February. Her behaviour has only gotten worse, especially during her pregnancy. She and her fiancé got engaged last year, and my DM organised a family celebration dinner for a week later. My DS made a huge fuss about us not sending her a congratulations card in the post(even though we had both bought one to give her in person at the meal). She threw such a tantrum about the cards that she refused to attend the dinner, which ended up being cancelled and my DM losing the deposit - she didn’t speak to my DM
for 4 months after this (because of a card). She also went ballistic at me and my DM because we didn’t get her an engagement gift. It got to the point where I ended up sending £100 in vouchers just to stop the constant nasty messages, but I regret it.

Her behaviour has only worsened during her pregnancy. She’s become abusive over the smallest things and regularly accuses me of not sticking up for her. After an argument with our DM, for no reason, she bombarded me with texts, and when I calmly explained I wasn’t going to get involved (since last time I did, she cut me off for months), she blocked me for three months after sending the nastiest abusive texts ever. I hadn’t seen her for a couple of months, but I saw her on Boxing Day. She moaned about the presents my DM got her saying they weren’t very expensive and then moaned about the food. I tried to be supportive about the pregnancy, but it was hard. The day ended with me saying ‘I can’t wait to be an auntie’ to her telling me, “Well, it’s my baby. You won’t be spending any time alone with it.” When I asked why, she said, “You have PCOS, if you were meant to be around children, you’d be fertile.” She also called me a “pedo” for wanting to be around the baby. I was devastated, especially since she knows how much I want to be a DM myself and how hard I’ve worked to improve my chances of conceiving (I haven’t started trying yet). She also told my DM she couldn’t be around the baby because she’s “too old” (60s, works full time, and goes to the gym three times a week) and can’t be trusted around babies. She regularly tells my mum to ‘go die ’. The disrespect she has is disgusting and I’m sick of it.

I had major surgery in August, and when she came round, I needed help answering the door, she refused to answer the door because was “3 months pregnant,” leaving me to struggle to get up and walk, 3 days after the operation.

This constant bullying and manipulation have drained me, and I’m exhausted. These are just a few examples, but they reflect years of toxic behavior from her and I could write pages and pages of everything she has done.

So, AIBU if I cut her out of my life? Part of me feels guilty because I want to have a relationship with my DN when he’s born, he feels like a link to my DD who passed, but I feel like her behaviour is seriously affecting my mental health. Any advice would be appreciated.

OP posts:
Cosyblankets · 03/01/2025 16:30

Eugh!
There are no words

Dotto · 03/01/2025 16:30

Likely she has some sort of narcissistic personality disorder, or she's a horrible bitch, either way, I'd encourage the whole family to cut her off, forever.

faintingfancy · 03/01/2025 16:31

she sounds absolutely awful and I’m sorry you and your mother have had to put up with this, I’d 100% go no contact. All the best to you x

moose62 · 03/01/2025 16:40

I would cut her out without hesitation and support your mother if she needs it. She will make your life continuously miserable. Just go NC.
Good luck when you start trying. I have PCSO
and luckily have had two children so it isn't always impossible.

Evaka · 03/01/2025 16:44

She's absolutely off her tits. Poor kid.. Yes, cut her off and don't look back.

lovemycbf · 03/01/2025 16:45

For the sake of your own sanity I'd block and never have contact again and I doubt she's going to let anyone near her baby that will be likely used as a weapon to manipulate you

HellofromJohnCraven · 03/01/2025 16:48

Just cut contact.
You are worth more than her. I had shades of it with my dsis when we were younger.
I'd also tell your parents as well. It's not for you to arbitrate in their relationship.

Itiswhysofew · 03/01/2025 16:50

How the hell has she ended up this way? You can't be expected to tolerate her going forward. Go NC and leave her to it.

Her poor child.

Muddledandmiddle · 03/01/2025 16:58

I had to stop reading, this is insanity. Of course you should cut her off, and never give her a second thought. What a horrible person she is!

Longsight2019 · 03/01/2025 16:58

I’ve a friend who was expected to maintain relations with an abusive brother for the sake of his parents. It ruined his childhood and now at 44, he is still struggling to shake off this moron who continues to bully, steal and abuse.

Dont waste a minute on her. She’s a disgrace.

BrightYellowStar · 03/01/2025 16:59

I have, unfortunately, come across her sort before.

When the baby comes along she will be crying out for help as she will undoubtedly struggle with being a mother. Motherhood does not sit well with self cantered arseholes like this.

She will look to make you and your mother full time babysitters as she will require rest and time alone with her DH to recover. Only this will go on for YEARS if you were daft enough to allow it. You would ultimately feel bad about it as it would impact your niece/nephew.

My advice is cut contact now. You don't need her toxicity in your life. Her behaviour and comments are outrageous. Warn your mum to put firm boundaries in place with her if she decides to maintain contact and make it clear to her that you will not be reconciling. Once she realises she needs help she will attempt to crawl back into your life. Too bad - you reap what you sow!

Holdonforsummer · 03/01/2025 17:03

This is horrible, I am so sorry for you, OP. Has anyone ever suggested that your sister has a personality disorder? I know that doesn’t help you directly but if I were you, I’d cut her out of your life but make sure your mum understands why you are doing it as you don’t want to fall out with her too and it sounds like your sister could try and twist things. Good luck 💪

LouisvilleSlugger · 03/01/2025 17:08

You clearly hate each other - it’s definitely a wise move to cut all contact between you. Hopefully it won’t have any negative impact on your mum.

Movingbutstandingstill · 03/01/2025 17:08

Based on the PCOS comment only go no contact!

Evio · 03/01/2025 17:10

My sister behaves similar to this, I contemplated cutting her out for years but felt so much guilt ...then she had a spiritual awakening/found jesus/and became a spiritual guru and cut me and my kids out of her life....best thing that she's ever done for me! Life is so much more peaceful now I don't have to tread on egg shells around her!

daliesque · 03/01/2025 17:14

For your own sake, cut this toxic waste dump of a human being out of your life.
I'll probably be flamed for this....but with her as their mother, your niece/nephew will possibly grow up like her with an entitled and toxic attitude (have seen this in my own family), so you possibly aren't missing out on a good relationship with them.
Good luck with your efforts to improve your chances of conceiving. You and your future child(ren) are better off without her in your lives.

2025HereICome · 03/01/2025 17:14

I cut my toxic DSis out of my life about 7 or 8 years ago now. Best decision I made. Shes had a DC and it's a shame I'm not in his life, haven't ever met him would love to be an auntie, but it's absolutely not worth it.

Your sister sounds just as toxic, cut her out of your life OO, Shes a vile vile woman.

FoxtonFoxton · 03/01/2025 17:15

You have more patience than me; I'd have gone completely NC years ago. What a hateful bitch. I wouldn't be holding out for a miraculous transformation in the future -it's not going to happen. Change your life for the better and start 2025 without her in your life.

Quinto · 03/01/2025 17:17

LouisvilleSlugger · 03/01/2025 17:08

You clearly hate each other - it’s definitely a wise move to cut all contact between you. Hopefully it won’t have any negative impact on your mum.

Yes. The only baffling thing here is why the OP and her sister appear to have continued to see one another regularly despite this.

QuickScroller · 03/01/2025 17:26

Quinto · 03/01/2025 17:17

Yes. The only baffling thing here is why the OP and her sister appear to have continued to see one another regularly despite this.

I guess it’s just been easier. I did cut her out for a few months in 2022 but it really upset my Mum so I stupidly let her back in.

OP posts:
wigsonthegreenandhatsforthelifting · 03/01/2025 17:28

LouisvilleSlugger · 03/01/2025 17:08

You clearly hate each other - it’s definitely a wise move to cut all contact between you. Hopefully it won’t have any negative impact on your mum.

I don't think that's fair to the OP!

OtterlyMad · 03/01/2025 17:29

Frankly you would be unreasonable if you didn’t cut her out of your life. What a nasty, selfish cow! Feel really sorry for her unborn child…

CandidHedgehog · 03/01/2025 17:30

I think it would be a really bad idea for you to form a relationship with her child - I have no doubt she would weaponise the child against you.

Save yourself years of heartache - cut contact now.

mcmooberry · 03/01/2025 17:30

That engagement card debacle was too much, please cut her off for good and don't look back. Explain to your mum that you don't want her mentioned again. It will over time become normal. You can never relax around people like your DSis she sounds unhinged.

Lollypop701 · 03/01/2025 17:32

Your sister will use any relationship you have with her child to manipulate you further… don’t do x can’t see child, gifts will be demanded and £££££ .. but you didn’t get a surprise as well so you are shit. Make sure your mum understands how this is going to go. Personally I’d walk