Quote:
Feeding problems as an infant, a general history of under-eating, and maternal depressive symptoms tend to be risk factors for developing anorexia. Other personal characteristics that can predispose an individual to the development of anorexia include a high level of negative feelings and perfectionism. For many individuals with anorexia, the destructive cycle begins with the pressure to be thin and attractive. A poor self-image compounds the problem. People who suffer from any eating disorder are more likely to have been the victim of childhood abuse.
You are effectively setting her up for this disorder as eating has become a battle between the two of you. She wants to be in control of something and her current eating disorder is something that the two of you are battling over.