I went to therapy for help with stress management and after a couple sessions all kinds of feelings I had buried from childhood started coming up outside of T sessions. I would rather just re-bury them too but I figure there is a reason they are coming out and my T is there to help. They haven't all come out in therapy yet but I am sure they will along with any others that my T helps me uncover in our sessions.

I make appointments with my T when I am in session so if I need to change it, I have to call her directly as there is no office staff or anything. In your case, I would say you call and try to schedule the session earlier and if your T says anything you just be honest that you did not remember the policy on that (which it sounds like you don't). You should also be prepared for the possibility that she might be booked up and your current appointment is the earliest she can see you next.