>>> [An] "artist" traced one of my images that ran full page in a magazine. She then sold this pencil drawing on eBay for almost a year until I found it. I luckily was told by another photographer that some of her artwork might be mine. I did settle with her for about all of what she made from the sales on eBay.
So if you can show that it indeed is a rendering from your original photo then you have a case of infringement.
I have the name of a gentleman that arbitrates copyright infringements, not a lawyer, in case you are interested. He came to me very highly recommended and has done a great job for me and others that I have recommended him too.