My mum wants to divorce my dad but he won’t let her

So my parents have been in a difficult marriage for years, with the final straw being my dad being abusive with my mum, after which she called the police and got him kicked out of the house. My dad and all of his relatives and my mum’s relatives too are saying my mum is mental and doesn’t know what she’s talking about, and my mum has begun the divorce process but is worried about what my dad and his family and her family will say or do

So my parents have been in a difficult marriage for years, with the final straw being my dad being abusive with my mum, after which she called the police and got him kicked out of the house. My dad and all of his relatives and my mum’s relatives too are saying my mum is mental and doesn’t know what she’s talking about, and my mum has begun the divorce process but is worried about what my dad and his family and her family will say or do

Suggest to your mum that she contacts a support service such as:
https://www.refuge.org.uk/get-help-now/support-for-women/

to get help and advice. Hope things get better soon.

I'm really sorry to hear what your mum's been through and I hope she's ok. My mum was in a similar situation and suffered years of appalling abuse from my 'dad'. I'd definitely be contacting Refuge and other domestic abuse charities for support. When my mum got divorced, the one thing she worried about was my 'dad' going to custody. The police report which will have been filed will help your mum enormously and assuming that you're late teens, you will be given a say in which parent you want to stay with and whether your dad gets access. Also, make sure you take care of yourself and access any support you might need - I didn't and the situation with my parents has left me with PTSD and toxic shame which I'm now having to get counselling for. I'm here if you need any further help or advice.

Thank you so much- I’m currently 19 and have two younger siblings, one is 15 and one is 11. I’m in such a tricky situation at the moment as I love both my parents deeply and I know they love us, and I don’t know where to stand in all this. The police have asked me if I could provide a statement, but how can me as my dad’s daughter provide a statement that could possibly lead to something bigger and more dangerous? I know that my mum has been suffering for years and I do want her to get out of this, but I’m so worried that my dad and his family and my mum’s family will paint my mum as mental; she has been suffering immensely from depression and she needs to get out of this marriage as soon as she can, but it’s becoming a lot harder as my dad refuses to continue with the divorce. The police are currently leading an ongoing investigation and there have been reports that my mum made against my dad from years ago too but she retracted them in the end, but now it’s become something much bigger and I’m worried about what’s going to happen, both financially and with our house and what’s going to happen with my younger siblings too, especially if they manage to convince the authorities that my mum is mental or something when she isn’t. I have suffered from this all too growing up and now I’m completely lost. I really appreciate your advice though; I’m too ashamed to talk to any of my friends about this and definitely not any relatives, and so the only people I can talk to are people online or anonymously

Is your father violent or on any medication?

It looks like your mother has decided that she's had enough and no longer wants to live with your father or be married to him.
You father and his family are likely tring to pressure her not to go ahead with the divorce and take him back.
They have decided that ganging up to insult her, label her "mental" and denying the facts of your father's abuse are their best possible ways of reacting to her decision and persuading her to change her mind.

Does your mother have divorce lawyers and a strong social support system from friends or her relatives to provide her with access to advice & practical assistance during the divorce?