Mom can't live on her own and we checked assisted living facilities near her old home town where some of her brothers and sisters live. Mom did not like any of the facilities and wanted to move in with her much younger sister. I had POA and Health care responsibility, plus oversight of all financials. The sister was to provide a family living situation (she has lots of adult children and grandkids) also provide company for mom along with a more consistent diet on a daily basis. Now the sister has convinced Mom that I live too far away and has had everything switched to her name. The whole family (me -my brother and the grandkids) know that the sister is using mom's money like her own piggy bank. Mom won't talk to anyone about this because she has blind faith in her sister. However when I and the family try to talk to mom about this she hands the conversation to her sister. And the sister's response is your mother wants me to do this for her. What do we (the immediate family) do in this situation?
I'm very sorry to hear about this situation with your mom. Family dynamics are always so hard. I'm sure your mom is grateful to her sister and family for taking her in. If you are concerned about any financial abuse, I would contact Adult Protective Services. Or work with a social worker and call a family meeting.
The question is...was Mom competent to make these changes. If not, then you will need a lawyer who will need to show the court she wasn't. Probably will need to get guardianship. You didn't mention if financial compensation was discussed with the Aunt. Your Mom should be paying room and board. Like said, her sister has Mom 24/7. Is mm capable of fully taking care of herself? How old is the Aunt? If after considering all this, then you should call Aunts local Office of the aging and find out how you go about having Aunt investigated.
Also, in some states, it is a crime to spend the assets of a senior citizen as if they are your own. You may want to check with Adult Protective Services about that in her state.
Good Luck.