Scam by buyer

So this takes us back to December 14th or 15th I don’t really remember the date but I had put up a post of a concealer and mascara so a buyer approached me and said she wanna buy then we both talked regarding it and closed the deal she booked the shipment but because of some reason I couldn’t ship the product so I apologised and asked her to book the shipment again for next day she booked then said Shiprocket cancelled her order I asked why she said “idk” and then she ghosted me for 3 days I messaged her several times if she wanna buy or not she didn’t reply anything then she came back on 20th December saying she is booking the shipment then she said what if I receive the mascara all dried up so for her assurance I told her she can pay after she receives the product (biggest mistake of my life) then after some days she received the products but her guard has it since she was out station she told me she will pay once she checks it I was like okay it’s been 3 days she assured she would pay me today but she’s not seeing my messages or anything

@manifestin-it-all8