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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Is my MIL a narcissist?

10 replies

Bridesmaidorexfriend · 10/07/2025 23:49

Long one - genuinely think my MIL is, but I worry that it’s used so commonly now maybe I’m wrong and she’s just a horrible person. So am I right is she a narcissist or am I overusing the diagnosis?

So my MIL had my DP and when he was 4 she left and didn’t come back. When she eventually got in touch my DP was being raised by his DGM, she then went to court for custody and won. Two years later she was remarried and got pregnant and DP was sent back to his DGMs (My MIL’s MIL). 4 more children later she has been in and out of DPs life.

DMIL is always the victim. When DP was supporting his DGM through palliative cancer DMIL asked to meet alone and told him that DGM had domestically abused her and stole DP from her. DP knows that there could be truth in that the first time (not letting DMIL leave with him) but DMIL chose to send him back to DGM when he was 7. She asked DP not care for DGM as she had domestically abused her. Obviously DP was raised by her so couldn’t do that. DMIL posted a Facebook post that Christmas tagging all her other children and thanking them for being them and alluding to DP staying in contact with DGM who had wronged her.

She spent every visit for the next year after DGM died of cancer trying to tell DP what a horrible woman she’d been. She couldn’t be redirected she would just go on and on about how evil she was. Half of what she was saying couldn’t even possibly be true. DP ended up going LC for a while.

Back when I met DP MIL pulled me aside and warned me DP was a user. DP was 19 at the time. 15 years later and I’ve only ever known a lovely and generous DP. Not long after DMIL remarried again and her new PIL were being really rude to DP and we ended up finding out MIL was lying about giving DP money and taking advantage of her, she has never given us a penny, and actually had relied heavily on DP for childcare while she was getting divorced, but she had created a story to make her a victim. They ended up falling out for a few years. Then she got back in touch and made DP the centre of her universe it was like lovebombing until we noticed a shift again and heard rumours of more lies. While DP was the fav she started doing similar to her adult daughter. She bullied her, lied about her, to the point we had to pick SIL up and her move in with us. DSIL was blindsided as she’d never known her mum like that. It became a pattern as she then did it with the next DD once she became an adult too. She would always try and get DP to agree with her that DSILs were awful and when DP would defend them he would get the cold shoulder for a few weeks. None of her other adult children speak to her now, but her younger children who aren’t adults yet are still getting the perfect mum.

Similar to what she did with me, she told SIL bf that SIL was a horrible selfish person and he would be better off without her.

I have also had a real gut feeling whenever I am around her that 60% of what she says are lies. Some end up being proven lies. She lies about her ex, her kids, and sometimes it feels like she’s lying about mundane things. She is also has cut off her new DH from every single one of his children, siblings and parents. They caught her in a lie but she convinced her DH they had misunderstood and he stood by her and cut them off.

DP is currently LC but DP finds that sad as they are so family orientated. I feel like she’s an emotional terrorist and hope that one day DP is able to cut her off completely so he can get a bit of peace from her but I support whatever decision he makes. She doesn’t get to me but hate seeing what she does to DP

YANBU - narcissist
YABU - you’ve misunderstood her/not a nice person but not a narcissist

OP posts:
ThreePointOneFourOneFiveNine · 10/07/2025 23:55

I feel like calling her a narcissist would be an insult to narcissists. She’s fucking awful. Shame that your DP won’t go NC.

Genuineweddingone · 11/07/2025 00:43

Sounds like my mother who is 100% a narcissist and it is horrible. She lies ALL of the time I do not think the woman has the capacity to tell the truth, she has pit me and my brother and sister against each other, shes called social services on me for no other reason than spite and drama and her need to constantly get attention in any way she can. I feel for you all I really do it is a toxic environment but unless you all walk away now it will continue to haunt you.

Yogabearmous · 11/07/2025 00:49

Yes she sounds quite narcissistic and an awful person. Dp should just go nc and end the drama.

GarlicMetre · 11/07/2025 00:57

I don't know what her diagnosis would be but am pretty sure she'd get one. She's bonkers and very likely personality disordered. This is awful for your DP, and I do hope you can help him - or encourage him to get help - to emotionally divorce himself from his birth mother.

The pair of you might find this useful: https://outofthefog.website/toolbox-1/2015/11/17/fog-fear-obligation-guilt

FOG - Fear, Obligation & Guilt — Out of the FOG | Personality Disorders, Narcissism, NPD, BPD

Definition: FOG - Fear, Obligation & Guilt - The acronym FOG, for Fear, Obligation and Guilt, was first coined by Susan Forward & Donna Frazier in Emotional Blackmail and describes feelings that a person often has when in a relationship with...

https://outofthefog.website/toolbox-1/2015/11/17/fog-fear-obligation-guilt

AnotherGreyMorning · 11/07/2025 01:05

So toxic.

Please cut her out of your life. And your dcs' life.

If your h sees her again, he needs therapy long term to cope. She's awful. Really bad.

I hope your h chooses to go no contact with her.

savagedaughter · 11/07/2025 01:05

No matter the diagnosis I genuinely do not understand why you have any contact with her at all. You say it doesn't bother you, but having a dangerous liability in your life is just that, dangerous, and it's not for your DP to allow such a dangerous venomous creature into your life.

I am not joking when I say I would move away, never speak to her again, block all channels and treat her as a domestic abuser.

I hope you don't have children that you're choosing not to protect from this person.

Bridesmaidorexfriend · 11/07/2025 01:22

savagedaughter · 11/07/2025 01:05

No matter the diagnosis I genuinely do not understand why you have any contact with her at all. You say it doesn't bother you, but having a dangerous liability in your life is just that, dangerous, and it's not for your DP to allow such a dangerous venomous creature into your life.

I am not joking when I say I would move away, never speak to her again, block all channels and treat her as a domestic abuser.

I hope you don't have children that you're choosing not to protect from this person.

DP went NC but then feels sad as she’s his only family left, and she has always stopped him seeing siblings before they started reaching adulthood. The LC is working ok atm as he has a few text exchanges but we don’t see her face to face.

I guess I’m NC as I don’t talk to her but if DP did see her I’d go for moral support. We don’t have DC yet but think you’re right. We need to have a serious discussion about that before DC come along. As that would be an issue for me. I feel like having a DGC would escalate her behaviour.

I do feel bad for DP though as I think fundamentally he just wants his mum to love him.

OP posts:
savagedaughter · 11/07/2025 01:41

Bridesmaidorexfriend · 11/07/2025 01:22

DP went NC but then feels sad as she’s his only family left, and she has always stopped him seeing siblings before they started reaching adulthood. The LC is working ok atm as he has a few text exchanges but we don’t see her face to face.

I guess I’m NC as I don’t talk to her but if DP did see her I’d go for moral support. We don’t have DC yet but think you’re right. We need to have a serious discussion about that before DC come along. As that would be an issue for me. I feel like having a DGC would escalate her behaviour.

I do feel bad for DP though as I think fundamentally he just wants his mum to love him.

Yes, I feel sorry for him, but he is putting you in a position where you have to tolerate a dangerous woman in your life too. That is just wrong.

And if and when you have children having any contact with this woman will be completely unacceptable, you can make decisions to be around dangerous people if you want to, kids need to be protected - as he unfortunately knows all too well.

He's going to have to choose whether to prioritise the safety and wellbeing of those who love him and need his protection or the woman who gave birth to him, as he cannot do both.

Anyway, good luck to you both.

Bridesmaidorexfriend · 11/07/2025 01:46

savagedaughter · 11/07/2025 01:41

Yes, I feel sorry for him, but he is putting you in a position where you have to tolerate a dangerous woman in your life too. That is just wrong.

And if and when you have children having any contact with this woman will be completely unacceptable, you can make decisions to be around dangerous people if you want to, kids need to be protected - as he unfortunately knows all too well.

He's going to have to choose whether to prioritise the safety and wellbeing of those who love him and need his protection or the woman who gave birth to him, as he cannot do both.

Anyway, good luck to you both.

Edited

I think DP is also mindful that his twin DBs are almost 17 and worship DMIL - both SEN. DP is worried that DMIL will turn on them like she has her adult kids soon; I think that due to their diagnosis she might not as they’re unlikely to be spreading their wings any time soon and I think she likes to be needed. But DB wants to make sure he is around if she starts her games with them. I can’t see him going NC any time soon.

But I appreciate your perspective and it’s deffo given me something to think about as children are being discussed and I agree I don’t want her around them so a conversation is needed

OP posts:
Namechangean · 11/07/2025 19:31

She sounds like a narcissist who needs constant attention which is why she makes herself the victim so often. There’s lots of resources for children of narcissists so your DH may benefit from reading them to help him realise that NC is the only way to manage a narcissist

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