Parents new to the world of eating disorder treatment beware: there are two types of "family therapy."
One type of Family Therapy sees the illness as an expression of a problem in the family that must be fixed in order to solve the eating disorder. You can see an example of this kind of thinking in this article: Could Family Therapy Be Key To Treating Anorexia? This kind of therapy is sometimes called the Family Systems approach.
The other type, sometimes called Family-Based or Maudsley approach , treats the illness as the problem and recruits the family to fight the nutritional and behavioral symptoms so the patient can regain stability and health and rejoin the family and normal life.
Big difference. Good explanation HERE . Ask for what you want.