If your T hasn't really missed your sessions (wasn't this about your feelings being bruised because she had a brain fart and didn't remember the exact day and time of your appointment?), and there really hasn't been any lapse in her treatment, what is to really be gained by holding on to this resentment? People sometimes have lapses in memory; that isn't an indictment on your worth. Talk to her about it if you can't let it go, but sometimes we have to choose the path toward closeness intentionally rather than choosing the path toward further discontent and tension.

I know we should all feel free to express our angers and frustrations with our T's, and if that is what you need to do to heal this wound for you, then by all means talk to her about it. I just wonder if, in this case, doing that is just a way for you to push her further away and keep a distance instead of healing and moving forward. Evaluate your intentions closely and decide what will be the path toward healing and moving forward. Maybe BOTH can happen. Nothing says the conversation about the memory lapse has to consume your whole session, right? You could express your feelings AND move on to the scrapbook in the same session.