This sounds a lot like my experiences with T1. I know an awful lot about his childhood, his life, his extended family (including medical conditions of his family) all of this without me ever asking him a question about any of it. All unsolicited disclosure.
I actually enjoyed the disclosure and the closeness I felt with him. I also enjoyed the between-session contact, the sending of articles, the positive comments about my poetry.
However, like you, I was extremely sensitive when his emails became curt and distant. It hurt me a lot, and we had several ruptures related to feeling that he was withdrawing, essentially sending me mixed signals. It began to consume my thoughts and became a bigger issue for me than those I came to therapy with.
I took a break from him and went to see a second T who has helped me to process all of this. I'm still unsure about going back to the first one; I miss him incredibly but question whether would be paying for something therapeutically beneficial or just something I really desire. I can't allow myself to pay for a friendship.
like others have said you have nothing to apologise for, the disclosure wasn't wise on her part. If the relationship is therapeutic for you I wouldn't necessarily recommend leaving like I had to, but I absolutely recommend a conversation around boundaries. Not having that conversation sooner was a big mistake for me, and caused repeated hurt over several issues.