I agree that this therapist is not the right one for you. I also think that returning to your prior therapist would not be very helpful for you. It seems almost like Goldilocks and the three bears. You know, the first T was too soft, this T is too hard. You deserve a T who is just right for you.

I don't understand why you need this therapist to go along with seeing your first therapist, though? If she feels her work with you is complete, why is it up to her who you see next, whether that's your previous T, a new T, or no T at all?