What can I do if I can't care for my mom?

If she is low income call Social Security and see if she qualifies for the Extra Help program for her prescriptions. The program will reduce all of her prescription costs.

From your profile: "I am caring for my mother Nora , who is 65 years old, living in my home with alzheimer's / dementia and lung disease."

What do you mean by "they cancelled her medical"? Since she is 65, why isn't she on Medicare?

Who is the family who doesn't want to help you? How did this happen to all fall on you?

If your mom is 65 she should be on Medicare and if her income is low she should be able to get some assistance through Medicaid for her copays and prescriptions. It is not your responsibility to pay for her doctor visits and medications and you especially should not be doing that if you can't afford it. To get her into a home you need to contact a state elder care social worker and you need to tell the state you are unable to safely care for mom anymore by yourself. There are limits to what we all can do and you've reached that limit. If the wheels don't turn fast enough you keep calling out for help. Call 911 and have her transported to the ER if it gets to that point. You need to make it clear to everyone around that though you tried your best, you simply cannot do it anymore, the scope of her care needs is beyond what you can manage, and mom is now a vulnerable adult. The state will take guardianship of her.