i don't see the big deal?
i can understand the views. If you look at it knowing she doesn't have any eating disorders, it demonstrates a good deal of willpower. A bit different approach to demonstrate it (heh), but it does prove that she is determined to reach her goal.
To Manderus, people here are just trying to look out for you. I wouldn't take any offense to their responses, as your situation could easily be seen in a negative way. As long as you know that your eating behaviour is proper, then keep on truckin' !