I'm not sure about the rescheduling... If that had happened I would have been even more likely to think that I was the cause of the negative emotional response. It was an unfortunate situation, but it sounds like the therapist did everything within their power to prevent the situation from being damaging. Firstly, the therapist tried to prevent the situation by asking the other therapist to not collect their stuff until after the clients had left for the day. I'm not surprised that she was angry with that therapist for not doing what was asked. It was disrespectful both to your therapist and also to you. I wonder if that was why that therapist had to be let go - because they weren't appropriately respectful of clients.

Secondly, she attempted to manage her emotional state such that you wouldn't notice that she was upset. She moved away from you and (by the sounds of it) did her best to put what was happening to one side in order to focus on you.

Thirdly, when you did in fact notice (sensitive clients have this uncanny ability to intuit the emotional feelings of others, especially including their therapists) she was able to honestly disclose the nature of her emotional state (anger) and the reason for her emotional state (the actions of this other therapist). It is a tough call from a therapists point of view... Some therapists would have refused to say anything at all about their emotional state and / or the cause of their emotional state - instead turning the question back on you as to what you thought they were feeling and the reasons why you thought they felt that way and what all that meant to you. Personally... That kind of strategy in a therapist would drive me absolutely crazy - ESPECIALLY when it was so bloody obvious that she was in a fairly intense emotional state (and it wasn't a projection from you).

In that circumstance I would have been inclined to take it personally and to think that the therapist was angry with me. I think she did the right thing in telling you how she was feeling (thus validating your intuiting that she wasn't okay). I also think she did the right thing in telling you why she was feeling that way (thus making it very clear that her emotion wasn't a reaction to you - it was a reaction to this other therapist disrespecting her and her clients so).

That being said therapy is indeed a place for you to process your responses :-) So... I think it would be worth processing how you are feeling in response to this. Not at all to condemn or blame her with the way she dealt with events (I think she did everything right with respect to the unfortunate situation), but with respect to this tapping into deeper issues for you. Do you typically think that other peoples negative emotional responses are caused by you? Do you typically have trouble knowing how best to comfort people when they are upset? etc etc etc. I do think it is possible to talk about and process some of this without at all blaming her or condemning her or making her feel bad...