Whenever my therapist says that she will be away for a few days and will miss one of our appointments, I throw a tantrum.
It happens 4 or 5 times a year, and it happened yesterday. I automatically get on what I call "child mode" and even talk like a child.
She always sits and looks at me when it happens, and says it's okay to be angry. I guess she knows I don't deal very well with abandonement.