Nurse most likely stole my disabled uncle’s credit card and spent over $1,500 over the course of a month

Hello, I am reaching out to see what my legal avenues will be for a theft committed against my disabled uncle who has dementia. My uncle is currently residing in a facility that specializes in taking care of elderly individuals who suffer from multiple disabilities. He has resided in the facility for almost 6 months and is not allowed to leave the premises at all. During every visit, my uncle will have his wallet near a dresser or inside the dresser, where his debit card (our mistake for not taking his debit card), ID, and other belongings reside inside the wallet.

My father and I have medical power of attorney over my uncle and have control over his finances. During the first week of February we went to collect paper work from his bank account and realized throughout the course of January 2023 someone spent over $1,500 on chick fil a, night clubs, Waffle House, nail salon, hair salon, and Walmart. His bank account has been idle for 5-6 prior to January with no charges taking place. We have filed fraud paperwork with the bank and filed a police report. The bank has refused to reverse the charges and are saying they were legitimate. We are in active dispute with the bank to have the money retrieved.

We currently suspect it was a contract nurse temporarily working at the facility who stole the debit card but have no proof and awaiting details from the police report. I would like to know what can I do on my end from a legal standpoint to hold whoever did this accountable. My uncle is a disabled veteran with very minimal income and this event has taken a massive hit on him financially and us to continue paying for the facility. Thank you to everyone’s input in advance.