My 89 year old mother gifted me $42000 in Nov of 2017 which I transferred electronically from her BoA account to my BoA account. She gave the same amount to my brother via check. She lives in his house in TX and I live in AZ. Since then she has been declining mentally even though she still thinks she is "with it". He has been manipulating her to return my portion of the money since he cares for her and needs it for her medical expenses. I really know it is for him. He has not held a full time job in 20 years and is a freeloader living off her retirement benefits. He will not let me speak to her since he controls all access to her and is at time abusive towards her and makes her cry. My mother gave me full durable POA in July of 2017 giving me the right to manage her finances but I have heard horror stories of banks not accepting POAs especially when it comes to electronic transfers of money. He has always hated me for my special relationship with my mom and is now turning her against me. I am at my wits end. What can I do to protect the money that my mom gave to me since he is now basically trying to steal it?