My T told me the same thing about my ED. Together, the two of us along with my dr, have now gotten the ball rolling at an ED clinic for help. Until I officially get into IDP, he keeps an eye on things and refers me on to my dr any time he thinks it might be medically necessary. He's told me many times that he's not going to watch me die from my ED, so he'll do anything he can to make sure it won't happen. At first that was very scary to hear. But as long as I'm honest with him, I'm comforted to know he's doing everything he can to get me the help that he can.
He has told me he's feeling stuck at times. I can't blame him either. This isn't his specialty. If your T is telling you the same, perhaps there is a very good reason for it. She wants what is best for you and to see you get the help you deserve. If she can help you find an ED clinic that can help you, I hope you take it. I'm sorry you are feeling scared- I was/am too.