Sounds like you began missing her, so understandable. Missing her very much and it turned into something else.

I don't think your therapist had any intention of doing anything at all except responding in the moment to hearing that you would not be able to continue therapy.
You aren't responsible for how she's feeling. She had a reaction to your ending therapy. Some people don't handle endings well, even therapists.

What might be helpful is for you to talk to another therapist about what happened with this therapist, if you are able to return to therapy soon.