She not stable mentally or physically. I have gone to our local hospital and asked for help, but they say she must come in willingly and she will not. She does not have a doctor, but does have medicare.
She can no longer walk, but says she will crawl before she'll seek help.
Valentina, do you live with your mother or separately? I know the pain you're going through watching her neglect herself. You may want to contact your county's Adult Protective Services to see if they will come out and evaluate what needs to be done. Your mother may not want this, but other people around her are suffering. APS may be able to help you find a better option for her.
If you do then you may be able to get her the help she needs over her objections.
If not (and please remember that I am NOT a lawyer here) but it sounds like the only recourse you may have to get her the help she needs is for you to go to court and get legal guardianship for her.
This is an extremely tough situation and I wish you the best, but I believe these are your only options.