So, so glad you are feeling better.
Your daughter has gone through a lot probably, worrying about your physical issues. I dont think you can get a real idea of her status until you are ok physically(getting close now)and she’s not worrying about that. I agree with you that her isolation is a big issue and it would be good to find an activity that might allow her to make a friend. Something she wants to do. Though of course you are going to have to watch her for depression and bipolar because of the genetic factor, I think you need to find ways to help her relax before considering a therapist and or pdoc. I myself have experienced so much incompetence in the professionals I have had that I share some of your husbands feelings. I would never send her to anyone unless you know someone whose child has had success with the person.
Regular vigorous aerobic exercise is so important for helping me to stay calm. I was always anti sports until I found water aerobics. I worry about you runnning for an entire hour with the ED. I was thinking that some exercise might calm her . Is there such a thing as yoga for kids? She might meet a friend.