Fake gift card trader

Before we make a deal 🤝 with her i tell her the rule card before payment ✅ but she refused and she tell me that i should transfer the 50% of the money when the card is valid then i will make the transaction of the remaining amount of money then i send her over 10,000 naira and she sent me an invalid card that are already been use i tell her but she is telling me am the one use the card and refuse to gave her her money 💰 so up to now she didn't gave me my money back and she refused to send me the Valid card.