My family is going through this on two fronts, you have my admiration and empathy.

1. My Dad's mother was hospitalized after a fall. We were aware she was falling bit didn't know how often. Once in the hospital it was like someone flipped off the lights. They discovered she has rapidly progressing dementia and the doctor would not allow her to return home without 24 hour live-in care. My father is an only child and due to some personality clashes it would not be healthy for him or his mother to move her in his house. He did manage to get her to give him power of attorney, although the doctors was ready to declare her incompetant if not and sold her house. We now have her in assisted living which is very expensive but she is getting VA benefits because my Pawpaw was a veteran. Was your father? The benefits extend to spouses. It is a lengthy process, my parents enlisted a lawyer for assistance.

2. My 91 year old Mammaw had a stroke earlier this year. She was able to get TDA and reverse most signs but the doctors would not let her live alone. She hadn't been for many years because my aunt moved in after her husband died. She had home health care come in for a few months post stroke to help but now it is just her and my aunt. She moved to a new house and must use a walker but other than putting in shower implements, she has not put any other implements in the house. She is pretty frail as well but stubborn as can be.

Hope that helps, good luck.