Scammed by buyer

Description

I’ve had a paypal account for numerous years, I have never had a dispute or problem. My account is personal so I mainly use it for transactions from friends and family. I know a girl who I considered a friend, she owed me money she had borrowed. When she finally said she could return what she’d borrowed she asked if I minded she send it through PayPal. I believe that was April 6th. I immediately cashed the money to by bank account. On April 19tj I received an email from PayPal stating she reported unauthorized charges to her financial institution. PayPal said I wasn’t required to take any steps towards a resolution, besides there Is no transaction report, no goods or services were exchanged. Her PayPal account is no longer searchable, does that mean her account is closed.. I’m convinced she’s doing this because she showed up on my doorstep intoxicated and I immediately told her to walk home because I couldn’t have her in my home. N0t even 5 days later she is disputing the payment claiming unauthorized charges. The best part is she paid for us to eat dinner the previous night so she clearly had her debit card the whole time. I believe she realized paying me was a necessity, but thought of a scam to get away with keeping her money. How do I prove this when needing to show the resolution center enough information for them to experience the buyers character. Am i guarenteen to lose this dispute. Any info or advice would be appreciated.