@dyslexia,
I read your opening post a few times, dys, & didn't post a response because there didn't appear to be any easy answers at all. Also because I hate giving easy "good advice" on the internet which doesn't fix anything, really.
I just want to commiserate with you in your particular family situation. Crappy families can make one feel like crap. That's a fact.
But I was thinking, if only there could be
one small gesture of conciliation from your father (like actually giving you the watch your grandfather left for you
) that at least would be an opening, a start ... The thought that your parents might die, with so much left unresolved, must be mightily depressing. I'm sorry it's like this for you.