That sounds amazing! I've not had psychotherapy specifically for stuttering, but a lot of the times when I've made progress processing suppressed emotions, my speech has become naturally more fluent. But fluency wasn't really my goal, beyond trying to understand my stutter. I could see the root causes of it in trauma, but ultimately I just wanted to stop feeling like shit all the time. For me these days, stuttering is one indicator among many that something is amiss within myself, and gives me a pointer to go within and resolve some kind of conflict.