Mother’s medication

My mother suffered from several illnesses which until now we cannot confirmed what's the real cause why she lost so much weight. She had her gallbladder removed due to gallstones. She also had pneumonia and ulcer and also severe arthritis. She also needs to undergo cancer test to find out why she's not getting better. But what's important right now is to have a surgery on her knees. Her arthritis is in bad stage, right now it's really hard for her to walk on her own. But as per doctor sooner or later she may not be able to walk at all. This is very sad for us. My father died last year after being in comatose due to stroke for 5 months. My mother suffered a lot from his loss and we believe she's still coping up. We only have our mother and we cant afford to lose her that's why I'm raising a fund to help us for her medication. Thank you in advance.