Did you read this story? http://www.torontosun.com/2012/01/10/teens-second-racy-photo-yanked-from-yearbook 
I've got a daughter that just turned 17, and if this was me, I'd be telling her that her yearbook is not for self-expression. It's a yearbook. Mom needs to step up and be mom, and the daughter needs to seek her attention elsewhere and put that photo in a more appropriate place. A friend of mine thinks the girl is a 'tramp.' I think that's a strong word for someone who obviously needs better parenting and guidance.