I think its good you got your feelings and anger out. Its ok to be upset or mad at your T. They expect that from time to time. Your feelings about her leaving due to maternity leave are ok. I had the same feelings when my T had hers. I was so upset that she was leaving me when I needed her that I took a break from therapy. This was years ago and I am still with her and things are awesome.

It is clear from your T's response that she does indeed care for you. Its in her actions. She wants to see you Friday. I think seeing care in actions means more than words but thats just me. Sure the words are amazing to hear but actions show so much more.

I really think you should go to your session on Friday and talk about this more with her in person. Then you can decide if you truly want to quit. She wants you there and you want to be there so you should go and tell her everything you want to. She can only help if she knows exactly whats going on for you. I hope you go and work this out with her. I am rooting for you!