Some of the girls in my class are skinny. Worryingly skinny. One of them is around 5'3" and 80 pounds. Her face is sunken in and you can see her spine protruding from her shirt. It is disturbing and disgusting. Strangely enough, I don't think she has an eating disorder, but I don't know her very well so I can't be sure. She certainly looks unhealthy, but I've seen her eat. Maybe she could be bulimic. Anyways, it really worries me. What should I do? Tell a teacher? I don't know her at all, and I have no acttual evidence, but she looks sick. Really sick. It is really scary.