Third Party Check - Bank of America?

My father passed away and my mother received a small check for the remaining monies on his worker's comp case. ($7800). My mother is in a nursing home, paralyzed, etc. I have a general power of attorney and handle all of her affairs. I have never had to worry about money situations because her social security check goes straight to the nursing home. How do I cash this check made out to my mother? She does not have a bank account. I bank with Bank of America, Armed Forces Bank, and Pentagon Federal Credit Union. Can I have my mother sign it over to me and deposit it? What options do I have? Help please....