Isnt there a way you can work through this with her?, im sorry you are going through it, I know how you feel, I had paternal transference with my group t, which turned romantic, I dont think he even knew, it was a group. Until I told my old individual t, and got yanked out of group, having to deal with all the crap, a year later I still have some feelings, and the new t, will work on closure for me.

I think you should talk to her before quitting, I know its painful, oh how our past can just creep up on us and leave us in shambles, I had no clue this crap would forever follow us.