I truly appreciate you sharing this and being supportive.
Truthfully ,out of experience (cause trust me I tried countless times) anything I tell my family will be weaponized against me, I'll be alienated even further, they'll unapologetically double down on the behavior that kick-started ,call me insane and selfish for how it'd be a burden on them and their respective families then brush the whole thing under the rug once again.
My biggest regret was not moving out before traumatic events happened 11 years ago that broke me. From that point my family hounded on me like vultures to a carcass. I remember sending a long wall of text to my sibling begging him to have a simple talk with my sociopathic parent that was trying their hardest to break me psychologically (health issues,new medication and treatments were already putting me in a very vulnerable spot) so I could have a minimum of peace until the holidays, then I'd move out after my exams,as i was dealing with way too much,if this abusive insanity kept going everything would collapse.
He replied "I don't give a shit, grow up". Things only got so much worse and so much more toxic from there. I ended up truly hitting rock bottom psychologically,I identified with reek from game of thrones with how broken I became, I eventually failed out of medschool path,was a broken shell of my former self. My family hounded on me and doubled,tripled,quadrupled their toxicity while the sociopathic parent became more&more abusive.It's impossible to explain how much of a number it did on me. Maybe it's because I was also dealing with a cocktail of soul-wrecking demoralizing health issues at the same time which left me extra vulnerable and ended up having a compounded effect with the psychological abuse.
Even when I left that environment,I was still broken,I guess still being in contact with their toxicity and them doubling down constantly on no abuse ever happening ,that it was all my fault,that I was always going to fail anyway and so on didn't help. I don't know. I do know I would have survived the health issues by themselves but not combined with the family stuff.
It took me an embarrassing number of years to become remotely functional again. (Of course I'm skipping most of the details).
My family can't help, they'll just make me go crazy and want to ctb even more.