Girlfriend got scammed ?! Need advice

Hey Boys and Girls,

My Girlfriend sold her UR Dragon Girl on eBay. This was ~ 3 weeks ago and the buyer got his money back via PayPal and is saying he didnt recieve the item. We have a Screenshot of the delivery via the VeVe App to the buyer Account (QR Code/Account name sent via eBay Message) What do we do next ? Goin to the Police ?