Has anyone had money stolen from Walter Reed Hospital in DC?

My Mom passed away May 22, before she died she left checks and cash with security there. I have been contacted by the hospital saying they have her checks, but the cash is gone. I keep getting mixed stories, like send us this form, we are sending you the money, no we are NOT sending you the money, you have to go to probate court...this is under investigation. HOW many people can steal from a military safe?? I am an only child, my mom left a will to keep her estate out of probate, it is NOT our fault someone at the hospital stole a dying ladys money!Why do I have to pay for an attorney, file in DC, to get something back that is MINE? Should I report this to the DC police, obviously Walter Reed is not planning on returning the money without me going to court..what is up when a government hospital steals from you, even tells you that the cash WAS stolen..and then wants me to go to court and file papers so that I can get the money back??