It would probably gain you more respect to take them down. Sometimes being the nice guy pays off in the end. But ask her to write a letter of her appreciation for your taking her pics down, and then post this on your site where her pics were. If you made some money off her pics then you still made money AND you get the respect of being "The Nice Guy"
This is just MY opinion though. I am not a content producer or anything like that. I just know when I was posting people's pics on my site and being able to make galleries of them, I'd be making a bit of money from the pics, BUT when they asked to have them taken down, I'd take them down. Had one girl who was about to lose her job because someone she worked with seen them and reported her. I took them down ASAP.
