As much as it sux, I am glad you're getting this opportunity in a therapy setting to deal with such issues and feelings surrounding it. It will help you be stronger in the long run.

I also hope that she shows up in the next group T session and that you will be able to share your feelings of anger and mistrust...and see where that leads.

I'm sorry you're dealing with this crud on top of everything else, but I am also seeing it as opportunity to grow....