We suspect financial abuse and she is wanting to get access to my mother house. we also have a sister with a disability confined to a wheelchair who is caught in this abuse. She has isolated every other family member from contacting her or seeing her. what can we do to revoke this power of attorney.
Can you get a copy of this Power of Attorney? Check to see if it was prepared by an Attorney, and check to see if it was witnessed by at least two people [depending on your State] and who was the Notary.
Prior to the niece making this Power of Attorney, who was the POA for your Mother? Your brother? Usually if a new POA is made, an attorney would notify the attorney who had drawn up the prior POA.