usb drama

Hi guys this is probably the stupidest thing ever but I need someone advice on what to do I was working in a creche for few months and they told me one morning it was closing immediately and I went home but before I left one of the workers I lent her my usb because she was doing her level 5 and needed notes that day I told her i need it back now she said ok ill drop into the nearest town to us the following night anyway ever since then she's being making excuses saying oh ill drop it in an evening during the week, my car broke down lies like, had an interview last week and the creche where I was is still open they lied bout that too and she has said since the cleaner has moved it in work when they don't even have a cleaner, so Sunday I wrote her on fb saying ok this is it I won't contact u again either post it to me or buy me a new one, she said I'm at a f******wedding I told u id contact u when I find it and not to contact her again. I know well she didn't look for it and has it just dosent want to give it back is there anything I can do plz