What would you do if you gave your friend money to hold on to and she stole it?

I was in an abusive relationship and when I got my income tax I asked my good friend to hold on to it so my husband wouldn't steal it. I lost everything I own my home all my children's pictures because my husband wouldn't go to work. I worked two jobs trying to support us, but I ended up losing everything that I had in storage, too. I gave my friend 3 thousand dollars to keep for me so I could get a new start. I have loaned my friend money before and she's always paid it back. She has a husband that makes good money and doesn't need my money. I have known her for nearly 13 years and we were very close friends. She's always been very good to me. I trusted her like an idiot . I asked for the money last month and she said it was in the bank and if I'd wait one month she would give me 200 extra dollars and that I could have it on the 16th. She called me on the 16th and said she would be at my home in 5 minutes. 30 minutes later she called me and told me that I gave her cash and I couldn't prove that I had given her any money. I was devastated that she stole my money and did this to me. I called her the next morning and got her voice mail only. I left her a message and begged her to give me my money. I have been through so much and lost so much. This money was for a new start for me and my 5 year old grand daughter. A few hours later I got a phone call from the cops telling me that I can not bother my friend any more. I tried to tell the cop what was going on. She told me that my friend had explained to her that she had given me back my money when i left my husband and that she had helped me all she could. The cop thought I was lying. Told me to take her to court. Well it was cash. It's her word against mine pretty much. On the 16th when she called I had the phone on speaker phone and another friend heard her tell me that the money was in cash and there was nothing I could do. I have no money to go to court. She knows and I know that she never gave it back. I feel so stupid for trusting her. My heart is broken because of the money and I truly love her and don't understand why she did this to me. She has a nice home and didn't need my money. Anyone have any advice on what I should do besides forget it.