There is an attorney handling the estate of my mom's deceased accountant who she invested money with. Attorney has been unresponsive to my inquiries.

My mother made an investment with her accountant, contract ended in June 2013 but accountant was sick at the time and only he handled the investments so no one else in the office was able to help me or return my money. He died in September 2013 but had since turned over all his investments to an attorney. I have the attorney's name, address and phone number. I have sent 2 letters certified mail, called multiple times but have not received any response from him. All I asked for was some answers, some sort of response but have received nothing to date. We are talking $60,000 and my mother has recently had a stroke the medical bills are piling up and will lose her house if we do not get this money back. I need some guidance on what I should do next.