I agree to what you say about the time aspect, that if a T generally lets his/her clients stay some more minutes it´ll ad up during the day. But that´s only if the T has very short of time between sessions.

I think it´s almost impossible to act in a polite and caring way if a T looks that harsh upon times. Of course it´ll be times when a client is in the middle of something and to me it´s only rude if the T then interrupts. Of course I don´t mean a client could stay for many minutes extra but a few minutes before to settle and a few minutes after if there are some concerns or stuff that you feel you want to tell before the session ends.

With this T it´s also that she seems inconsistent, she herself arrives late, about five or ten minutes and sometimes she has let me stay for some extra minutes when she felt the need. But this time it was me talking about something when the session was about to end and then suddenly she had to tell me that we had stayed past the time of the session. (45 min)