Buyer raised an issue and then deleted her account

I sold a plushie for $50 to a buyer who seemed nice, about a month ago. there was a small hole in it which I mentioned in the description and showed a picture of in the listing. There were many photos of the plushie from multiple angles.

today she raised a request saying the item was not as described because it was not the right size? she said it was bigger than expected, and so is the hole which leads me to believe she has damaged it further. I am not understanding how a plushie can be the wrong size, but when I go to respond to the buyer with my proof and disagreeing with her, it shows her account is deleted.

when i go to the resolution center, the only option I have in response is "Got It." This was only opened 10 hours ago, so I know I am not too late in responding. I have submitted my own ticket but have only gotten AI responses.

Am I going to be out $50 and the plushie? I don't want to refund and be re-sent my item because I suspect it has been further damaged and I will not be able to sell it again.