I foresee this not being a good thread...
So, I'm kind of lost on what you're asking? Are you asking if you should break up with her? All the words started jumbling together...
If you're not comfortable in her doing what she does to turn herself on, then tell her. If she doesn't want to stop, then you have every right to break up with her. If you're worried about her having naughty pictures and then handing them out, then I'm not sure why you trusted her enough to take them?