Remember though: She didn't take away her care. She is simply saying she does not think it wise to start back into therapy again together. I doubt this is a matter of her not caring; if that was the case, she could have simply not replied at all.
I think you are at least understanding that the negative motives you are attaching to her decision are probably more your own self-talk than they are her actual reasoning.
I'm sorry this is so painful for you, but perhaps this level of intensity is indicative that maybe a different therapist altogether might be a better plan if you do not feel like it is working with your current therapist.
I've switched therapists a few times over the years, and fresh eyes and approaches honestly probably did me much more good than if I had gone back to an old therapist.
Be gentle with yourself. This is a choice she has made based on how she perceives her own ability to serve, or not serve, you best.