she has an issue with striving to weigh less. off the top of my head id say anorexic. Anorexic is when you starve yourself specifically because when you look at yourself you see someone who is underweight. people who are anorexic have a distorted view of themselves even though they are underweight. if they begin eating and then throwing up purposely, they are not anorexic nervosa, but are bulimic.
