i think it depends where you can see this relationship going in the future...i can't answer whether you should stay or go, that's a difficult call and only you can decide that. yes, you probably are making a difference as supportive ppl are a great help to recovery...i used to be anorexic and the worst thing for me was ppl treated me with such disdain and fear, nobody wanted me. BUT don't think that you are going to be able to "save" her...it's her responsibility to get better, you can only help along the way. also remember that if this gets to much for u, you can leave the relationship at any point. hope this helps