Okay, so I sold a Gucci Bag. Buyer bought it, paid and I shipped, with Signature Confirmation and Insurance. I checked USPS and it said it was delivered. I E-mailed the buyer and asked if she could leave me feedback when she gets a chance. She says she hasn't received the bag. I told her the bag was delivered and signed for. She denies this so I tell her that since the bag was signed for its on her end to investigate it. I don't hear from her for a couple of days and then she E-mails me and says she wants a refund and that the bag is fake. I bought the bag myself at Gucci I know its not fake. She has now escalated a Paypal claim. What do I do? Can she just say the bag is fake and get her money back. Or does Paypal make her prove in some way that its fake? What exactly can Paypal do to my account? Thanks!