This is Dr. David. I am reviewing your question now and will be with you momentarily.
I am so sorry about your mother.
it can be very difficult to see a loved one decline and suffer without being able to help them.
if she is not willing to help herself, then it can make it very difficult to help her
it does sound like she needs to be assessed and put into a long term inpatient care facility.
it sounds like she is a danger to herself as well
if she is a danger to herself, she can be sectioned by the authorities and placed into a mental facility against her will.
you may have to contact local hospitals or mental health facilities to have her sectioned into a mental health facility for forced treatment and forced residency if she is a danger to herself.