Consider it a transition. Consider using email if you wish not to get response but as a way to simply vent/share what is on your mind, knowing you will bring those topics up in session to be visited and processed in session (which is probably a better way to process this kind of thing anyway).

Some people here have talked about having an ongoing weekly email that they don't send, or that they send a day or so before session as a way of communicating what they need to work on in session. Others have simply kept a therapy journal where they write down what is on their mind and bring it with them to session as points to work on when they meet with their therapist.

Your therapist is still your therapist, able to work with you and support you in session, but her message is that most things can and need to be discussed in session rather than via email, and she seems to believe you may be relying more on email and a need for quick response (and that relationship ideal that the therapist is there for you all the time rather than in session).

I know the change is difficult to accept, and I am sorry you are hurting.