My sister and her daughter lived with my Mom for years. Mom has been showing some signs of dementia. My sister got her to put both of them on the house deed, on her bank accounts and give them Power of Attorney. I have my doubts about all of this. It's not about the money; it's about my Mom. She's 90 years old and I want her remaining time to be peaceful. I don't want to start anything but my sister is acting like God - saying who can get info, getting reports on who goes to see Mom, etc. She had Mom sign a new POA giving her full control over everything. Mom just signed it; didn't bother to read it. I need help. Thanks so much in advance.