"I just don't know what to do, but my first inclination is to email her and ask her not to respond, then to tell her I am not going to session on Friday and that I also purged and that she hurt me. But I don't want to make her feel bad. That is a big part of why I don't want to go to session, b/c I feel like I am too troublesome. "

First - you will not be making the therapist feel bad. A therapist that feels bad based upon a client's feelings needs to go get themselves fixed, but it is not a client's fault. I suggest you go tell her that you were hurt by her and your way of dealing with hurt is to purge. Are you looking for other ways to cope with being hurt that she might could help with? Do you want her to feel bad that you purged? Do you just want her to know how bad you are hurting? Or are you expecting her to reject you? I think all of these are fairly usual responses to therapists when they do hurtful things (intent on their part does not really matter). The bigger part is to tell her and not try to take care of her - that is not the job of the client. (at least not in my opinion)