I think that feeling abandoned and talking to a therapist about it are separate from the reality of whether the therapist actually did abandon or not. I would look at it like why not just go in and rail at the therapist about how you feel abandoned by her. Sure, you have to pay to do it, but it isn't going to bother the therapist and you might feel better. And if that is not satisfying, then don't go back again. For me, the truth about therapists is that clients are not the most important thing in their lives.