I don't think it's fair having one's own pet peeves and kicking the other person to the curb when they can't have a clue you have that pet peeve. My T and I would let a phone ring when she forgot to set the answering machine and that was almost worse than if she'd answered it! We couldn't continue until the person on the other end hung up. Sometimes things like that are funny because T's don't automatically know what to do, which way to "jump"; we had knocking at doors when we were the only ones there (because she'd forgotten to lock the front door into the waiting room) or people talking too loud in the hallways not realizing and she'd have to go out and tell them to move/have their converstion elsewhere but we'd wait, hoping they'd get a clue or finish, etc. Does she work with other T's? Each room usually has a connection to a "central" phone and if they (or sometimes it's a secretary's responsibility) forget to turn off the phone to that room before a session, it's going to ring. I'd at least tell her you hate when that happens so she has a clue. If you can't do it when it happens, tell it the next week, in the past-tense? No way anyone is going to go through an entire relationship never pushing any of another's hot buttons at some time or another. My T usually gave me a couple more minutes too to make up for any interruptions or late starts that were her or the "session setup" fault (couldn't get into room, etc.). Little things like that are going to go wrong, that's what you're in therapy for as you say, to learn to let people know when they do things you like/don't like. My T went through a rough patch where she was losing my payment checks too often :-) I think eventually she had to fire her bookkeeper and take it over herself but then she got stressed and mislaid one, I cancelled it and then she found it and called me back a few minutes too late :-) Stuff happens.