My boyfriend and I moved out of my parents' house a few months ago to get away from my alcoholic father. We've been so happy ever since. However, my dad finally moved out, and my mom, though happy to be rid of him, is a very dependent person. Every time I come to visit, she begs me to stay with her. Granted, she has a son with Cerebral Palsy, and it's hard taking care of him... and I can't be here all the time. She's rather sick herself, with heart problems and degenerative disk disease. I feel really bad leaving her, but the truth is, I hate being in her house. It's filthy, none of the plumbing works, and I just feel like shit whenever I'm there. I know the right thing to do would be to move back in with her, and maybe this makes me a horrible, selfish person, but I really don't want to. What should I do?