I Need Advice

Me and a very close friend are friends with a particular girl. This girl is what you might call friendly. And we already knew that about her. But thats not why we became friends with her either. But she ended up asking my friend out but he doesn't like her so he said no and every thing was okay and we were all still friends. Now this girl has sent nude pictures of herself before to guys she likes before. 4 days after my friend turned her down he was sent one from her which is really sad and we want to help her. But I'm not sure how. (we all go to a Christian school). She's super nice and fun to be around and is a very good friend. But we obviously can't tell anyone about this because we can't let her get in trouble. That would ruin a great friendship. We just want to help. I want to tell her that i care for her and love her for who she is, not because of her body. If anyone has any advice on how to deal with this and show her that she is valued as a person I would greatly appreciate it. Thank you so much for your time.