I think a lot of people go into therapy for a certain issue and end up discovering a whole slew of things that need to be worked on. So unless your T is strictly for ED, then I wouldn't hesitate going off in other directions as well, even if it isn't her specialty. You could always ask her! Something along the lines of "I feel like most of my eating issues have stabilized since starting therapy, so where do we go from here?" or something. But I have a feeling she wants to help you become a better, more happy/satisfied, healed, confident person all around not just with the eating stuff!