Gosh, I'm going to sound like a terrible person, but I cut my abusive mother off about a year of so before she died. It was the best decision I ever made and I would do it again. Abusive parents reap what they sow and they should. I was the complete opposite raising my children and even though I think I was a great mom, I would never expect them to bail me out of a self-made mess. Last thing you might consider is making sure she is on public assistance, as they will pay to care for her when she can't care for herself. It's time for you to worry about you and your family.