Strap in this is going to be a long one.
I met my ex-husband in my late teens after an awful childhood in care, I had zero family and zero confidence. Despite being having a single parent he seemed to have a great sense of family. Fast forward 19 years - it was all a front, we had two children he had been very abusive (phyiscally and mentally) for the last 7 years but refused to end the relationship. I was broken, living on eggshells but finally summoned up the strength to file for divorce - he went ballistic (again) was arrested and became subject to an injunction, which regularly broke.
My daughter, the youngest child, got used as a pawn by my ex and definitely saw far too many things she shouldn’t have, this (not apparent for many years) has had a big effect on her mental health. I have to put my own hand up and say I was a bit of a mess at that time with so much going on, my ex had alienated me from most friends and I did a good job of being far too needy (needing to talk all the time) with the few left. I didn’t have the money (despite working) , time or insight to realise I and the family should have had professional help to work rather than just powering on.
My daughter (now late 20s) broke up with boyfriend just before lockdown and has temporarily moved in with me. She was going through a very bad mental health crisis (presenting as wavering between constant abuse to me and screaming for help) but having managed to get her to a psychiatrist, she has finally had a proper diagnosis (previously she has only been diagnosed as depressed) and started to do much, much better.
However, her father after Is still a controlling bully and I don’t know what to do. His modus operandi over her adult years is to pay for something (her car is a good example) but only if he can choose it (it’s 14 years old) then constantly threaten, by ringing up literally screaming in rage, to take it away if a conversation, for instance, doesnt go his way. This happens over the most ridulous things. Since her diagnosis he has shouted at her disputing its validity. Her response at that time was he that she felt he also had a similar issue along with anger management issues - he went quiet for few days after that.
Unfortunately, (only because, in my opinion, this is a main reason she stays in contact with him at all) she has a teenage sister from his new marriage, who she is very fond of. She had arranged to take her to purchase a hobby item today but had mentioned I might go too as there is something I needed (I’ve only ever been same room as her twice before) . My ex has discovered this last night , it wasnt a secret, and sent my daughter a number of texts saying in essence if your mum is there, your sister is not going because he is not happy with it. Apart from firing back a message that completely inflamed him, she is pieces, she can’t understand why her sister is being totally protected (from something that isn’t actually a threat), whilst he did nothing to protect her own childhood in any way.
I asked if she had mentioned to her psychotherapist that she had underlying ongoing issues to deal with, not just historic problems, and she just got very cross. She felt as I am financing the sessions I want to direct them - honestly I don’t but I am totally at a loss what to do.
Incidentally, he has never treated our son (4 years older) in this way and, as you may imagine, this had led to a very fragmented family.