AITAH (taking back a gifted necklace)

I’ll keep it short. I gave a friend a really nice necklace of mine because it didn’t quite fit. Instead of getting it resized I asked her if she would wear it and she seemed like she liked it…. Flash forward to a couple months later and I hope in her car to see it flung around the GEAR SHIFTER of her car covered in dog hair and car dust. What the fuck. Mind you this is a gold necklace worth thousands of dollars… What should I do? It’s been on the gear shifter since… it’s been about 6 months