I am so frustrated with my mom. How do you all deal with it?

She knows how to get to me. She finally agreed to go to rehabilitation therapy after I told her that I cannot live down here an hour and a half away for 6-8 weeks and take her to the hospital twice a day for physical therapy and changing her foot wound.  She had her big toe and part of her foot amputated while I was in another country. I drive down and I try to visit with her and all she does is sleep but when anyone else is there she is wide awake. It’s like she becomes an invalid as soon as I get here and she is a complete control freak with money. I have caught her in so many lies and I am trying to get her bills paid and I set up a payment plan for her. $800 in collections,who knows if she will even pay it. Then I try to ask her about bills and she just keeps lying to me even though I have already talked to these people. These bills have to be paid while she is there and she doesn’t make sense when I am there and I am like mom your sleeping. No I Am Not. I am just so afraid that if something happens to her what is out there. I don’t even know why I am down here. I have my own health issues. I am trying to recover from anorexia that I have been dealing with since I was 10 and all she talks about is how fat that person got. She took me to weight watchers when I was 10. I don’t mean to sound like I hate her yes I am really upset right now. I cannot blame her for my actions but when I come down here it’s like I am back in high school. How do you all deal with it? I also am the go to person for my father in law who has brain damage and then I thought my doggie was going to die yesterday. I was really hoping this year things would slow down, then I feel guilty if I don’t do everything, but I have to step back. I know it’s up to me to take care of myself. I don’t know why her generation expects their kids to stop living their life. What would happen if I was working? I also have part of my pancreas cut off.