My 79-year-old sister has had a tough life--who hasn't. However, when she says I'm the only person she can talk to, I know why. This is just a continuum of our mother, only worse. The constant calling, paranoia that neighbors are watching her, disliking everyone and everything. I've had enough. I drink to relieve it. Not good. Should I just cut ties with her. If I do say anything that is contrary, she begins yelling at me. I don't need this in my life!!! HELP.