my girlfriend's not eating what do I do?
So lately I have noticed my girlfriend hasn't been eating around me, and she always has an excuse like I'm not hunger or I'm gonna eat will my brothers etc. The other day she left her bag at my house and I was picking it up to bring it to her house and her notebook fell out, and when it fell it landed on a page that said in big bold red letters: FOOD IS THE ENEMY!! so I looked at her notebook, I know what your thinking that was a total invadtion of her privacy but I was really worried about her when I saw the food is the enemy thing. I read a bunch of stuff like how she wasn't really eating with her brothers cause the haven't eaten together since they're dad died (her mom die in a car crash when she was 6 and her dad died in Iraq 1 1/2 years ago) and how empty feeling in her stomach feels normal now and if she eats she must purge etc. I don't know what to do cause if I ask her about it she'll know I read her notebook please help! By the way I'm 15 and she's 14, we're both freshmans in highschool, she plays volleyball and she is a really big perfectionist like she has straight A's, she is the best player on her volleyball team and is the nicest person in our school, you could ask anyone and they would say she is the sweetest and thats way she shouldn't die from not eating I just don't know what to do please help!!