I quit and go back all the time because, although I feel better right after quitting (unfettered, free, not trapped, a way to end the frustration, and because it is so absolutely effing stupid), within a couple of days I feel sort of sad and off kilter about it and possibly that could include missing the t perhaps. So I call back and make an appointment and we go on. Sometimes I go back and rage (this does not really faze the t so I do not worry about it) or express frustration and list her many failings (this does not faze her either although sometimes she will apologize) and so forth.
The thing is, I realize I can do something about feeling sad or off or missing the therapist and if I let myself at least try to fix it, then I feel better. I figure if it fails then I was right in the first place and go on triumphantly over that at least, and if it does not fail (I make the appointment and go back and feel not sad or, no matter how improbably this is, not missing her) I feel better.(so far it has not failed)
CoY -you could call her and think of it as a gift to yourself that could make you feel better. And you could go in and rail at her for what you perceive she did if it might help you. You can have some control over this situation. I hope it is going well for you.