longwinded

I have been reading thru my old posts, andan, am I long winded! I think it's because this is one of the only places I can really vent.
Dealing with the Defunct dad and Evil step-mom recently stressed me out so much, I was physically ill. I know that it's nnot right. I should just tell DD and ESM that I'm not going to do this any more, but I can't. I know ESM only has a few years left because of her health-and if I cut thungs off with them-I cut them offfor me brothers and sons. I don't think that is fair. It's not fair how they just up and quit talking to me one day either. I don't know what to do and Hubby's not much help-he doesn't like them. What drives a parent to disavow their child??