That leads to the second issue which is that it is now impossible to determine if the painting is a derived work off her photo, or if it is a derived work off o

That leads to the second issue which is that it is now impossible to determine if the painting is a derived work off her photo, or if it is a derived work off one of the countless other images on the web that look pretty similar. I did some image searches to find out if this photo was an ordinary reproduction of something commonly done but found only references to this case and a few references to Zhang's other work. Where/how did you find countless other pretty similar images?