Hello, Miss Laura! Yes, I remember your disappointment over that last meeting -- I would have been exceptionally disappointed as well.

Do you know why you've been referred back to this psychiatrist? Is there anyone you can ask why and what this new meeting is about? You could say that the last meeting with this fellow only lasted ten minutes and, knowing your time with him is limited, you want to prepare in advance to make the best use of that time.

Your anxiety is perfectly understandable. I would hope your caretakers recognize you deserve to be informed of what they're doing.