Oh, Chummy.
It sounds like you don't want to stop. I don't think it sounds like your therapist wants you to stop either. I think it's considered unethical for therapists to try to stop clients from leaving their practices, so I don't think it means anything at all if she doesn't seem to be trying to stop you from no longer seeing her.
I also think it might have been a good thing to send that email, if it showed her the depths of your pain the way this post does. She's not going to change her plans, but it should make her more sensitive and more determined to find a good replacement therapist for you. And when she comes back in the fall, it might help your relationship then as well. I think therapists often don't realize the depths of a client's emotions, especially when they themselves are causing that emotion. Hopefully she does now.
You know, you can ask what she thinks of you. And you can ask if she cares about you. (I would say she does based on your posts.) Does she hug? You can ask for that too.
I would just keep a reply email short. Say you'll come on Friday, but obviously there are things you two need to discuss.