My disabled mother has spent the whole year in bed and I don't know what to do.

Hi all, I'm 21 years old, I have experienced severe depression myself my entire life so I understand what my mother is going through to a degree, but there's no sign of her getting better.

She attempted suicide around a decade ago which left her covered in burns, around 70% or so of her body, especially the front, her face and her hands (she no longer has fingers). The past 2/3 years she went through a manic phase, she left me in our house while I took care of my little sister for a week to go to another city, became an alcoholic, said I was conspiring against our family, would pick fights with restaurant staff, spy on our neighbours, etc. I believe this is because she stopped taking her meds.

Last year, she attempted to commit suicide again, which I had to bear witness to as she was having seizures and foaming at the mouth while I was hysterically crying down the phone to the 999 operator. Ever since she has swore up and down she would never do anything like that again and I believe her. She has mellowed out to a degree where she spends all of her time in bed, most of the time doing nothing. She is unhappy with this, our family of course is also unhappy with this but only in the way that it's hard to see her like that.

Our family is tiny and we don't have much support, my mother is also very lonely and has no friends. She was dismissed by the mental health centre she was going to (but I believe her social worker has tried to get her back on it, although the social worker ever rarely calls), she has no hobbies, her mobility has weakened moderately, she doesn't want to watch things, read things, she barely eats anything substantial like hot meals and instead opts for quick snacks.

Not long ago she said "I'm so lonely" in a way that broke me down. I don't know how I can help her, or where I can tell her to reach out to, I'm lost, she's lost. For ANYONE who has had a similar experience, I really need some advice. I don't know where to look, so if this isn't the right place but you can direct me somewhere, please, I would really appreciate it.