I will try to keep this short as it is a rather long story but any advice would be appreciated!!!

Basically, in a nut shell, my mom has not been "herself" lately. I'm not around her a whole lot since we live in different cities and all but talk to her on the phone from time to time. I started noticing that she would fall asleep when she was on the phone with me and/or not remember the next day that she even had talked to me. When I saw her recently, things were not good at all. Her appearance has greatly changed...her teeth are gray and her eyes are sunken in and kind of dark. In watching her and from things I have heard, she is falling asleep during anything even things such as making her cup of tea, smoking a cigarette, etc. The sleeping during smoking is true as I watched her do it and there are cigarette burns on the floor and on her arms from doing this. I have heard from 5 different people that she is getting drugs from people around the town and, from family, that she is spending about 100-200 a week on these. This is evident as her bills have not been paid and there is nothing to show where the money has went. The house is in shambles. When I talked to her she got really upset and insisted that nothing was wrong with her but that she was depressed and that it is everyone elses fault. She hasn't talked to me since. I worry about the safety of mom as well as the other people that are in the house with her. I worry about when she gets out to go somewhere as she is falling asleep while driving. What can I do, if anything, to help her? She stated she doesn't need my or anyone elses help. This tears me up as this is my mom and also because my kids are asking why they can't go see their grandma. Any advice?