She was fine with it, it sounds like. My T once responded to my statement about something she did by agreeing with my comment and saying "I know that about myself". It sounds similar to that. And it sounded as if she was hoping to free the anxiety about saying what was on your mind because she is interested in whatever you are thinking.

Your anger didn't cause your T to do anything or to say something negative about herself.

But I think your anger scares you, you believe it has power, and it scared you to feel anger toward her. But that's therapy. You accept that, hard as it can be, and you take it out and look at it so you can understand it and ((granite)) much better.