I too am dealing with the issues of caring for my 92 yr mother. However, she was very deligent before the dementia progressed. She has a living will, appointed a POA representative (me) and had all her finances in order. It has been challenging at times but nothing we can't handle without an attorney. It has been a wake up call for me to have everything in order and have discussions with my only child about my wishes when I can't do it for myself. Right now I'm trying to pre-plan her funeral. That is definitely not pleasant but necessary.
I would suggest talking to the Agency on Aging. Sometimes they have lawyers on staff.