Hello Daisy, I'm sorry you ended up losing half of your session through no fault of your own. Yeah it really sucks when a T still finishes bang on time even though you couldn't do anything about being late. I've had that happen to me twice with two different therapists and neither of them even mentioned the loss of session time, they just finished at the usual time as if it was like a normal session (I'd have liked at least an aplogy for having to finish on time or some acknowledgement of how it made me feel, just so I could feel that it mattered to them that I missed out on precious time
)
I also get how unsettling it was for you and how the actual session you had ended up making you feel worse. There's not a lot can be done about it because it seems your T has been very clear about finishing on time regardless of the reasons for lateness (what about when HE is late, does he make up your session time then?) The thing is though that it has affected you negatively, and it sounds like this is something you could bring in next session to talk about, how you felt uncared for and unimportant. Even if the point of talking about how you feel isn't to get him to change his boundaries, it's still important that you feel able to express how it all makes you feel.
From your other posts about this T, I get the impression that he comes across as a bit cold and uninvolved during your sessions. (I remember you saying that he seemed to be applying a lot of pressure on you to do more work since you switched to self funding.) Have you been able to talk to him about how the way he relates to you makes you feel? What sort of T is he, do you know? Would he welcome your opening up to him about how he makes you feel?
I'm sorry again that you've been left feeling worse for having had a session than no session at all, and I hope you are coping ok and not giving in to the pressure to SI.
LL