Therapists often have different beliefs and biases due to their theoretical orientation. A behavioral therapist just wants to fix you and get it over with, whereas a psychodynamic/analytic therapist wants to take the time to get to the often unconscious root of the problem.
Every time I was in short-term therapy I "got better" quickly but ended up needing therapy again because the gains I made never lasted. That's because my issues had much more to do with very old patterns of behavior, and short-term behavioral approaches only worked until the unconscious patterns were triggered. Finally, after many, many attempts at short and moderate lengths of time in therapy, I started long-term treatment with a psychodynamic therapist. Been with him 10 years. It took me almost 9 years to trust him and stop trying to control him. And that's why short-term therapy never worked well for me, because we never uncovered the huge issues I had with trust and with relationships in general. Now, finally, my progress is steady, and regressions are easily corrected because I understand where the problems were coming from.
So don't worry about one therapist's opinion. She doesn't know you or your difficulties.