My mum is very good friends with a lady who may as well be my aunt. I will call her Sarah for the purpose of this thread. Sarah is in bunch of our group chats with my actual aunts, has known my mum from school, knows my granny etc.
For about 25 years Sarah has been married (and is still married) to a horrible, controlling, aggressive and violent man. They have 3 children (ages 20, 16,10). She does everything for the children, he doesn't contribute a penny towards the children and sounds like a grudgingly pays towards bills.
About 10 years ago, Sarah tried to take her own life in a hotel room and was then diagnosed with bipolar disorder and some kind of paranoia. It has since transpired that her oaf husband has been gaslighting her eg. Will cut up her clothes and make her think she's done it, hide her medicines, do weird things with her jewellery like throw them all over the garden and make her think she's done them. He'll call her nasty names eg. Transvestite, prostitute etc and then say he didn't but her children will have witnessed it etc.
Every now and again, roughly 2-3 times a year, Sarah is convinced she wants a divorce. Her husband becomes really manipulative, goes into overdrive mode trying to make her feel like she's crazy. He threw a glass at her yesterday.
My mum and aunts have always been very supportive of her when she does want a divorce but this time round they've said she has to make the decision and they can't hand hold her through it. The reason being is that she never actually goes through with it and everyone feels like they've invested themselves too much or something. Although I appreciate that we can't actually do it for her, my question is, how do I support her? She has no parents, she has a brother who I think has some sort of learning disability and she cares for him too and so it seems like the only other people she knows is us. I think it would be awful if we then stopped being there for her. I appreciate it's frustrating that she isn't going through with a divorce but I can imagine it's a very difficult place she's in. She phoned up the other day to say she's scared of being alone if she gets divorced.
Tl;Dr: don't know how to support friend in controlling and violent relationship