My xT and I frequently had ruptures about my child part/needy part or whatever you want to call it. I had massive issues going in, unknowingly, and he was a good therapist but he didn't understand what I needed (nor did I).
I absolutely think that my current T's acceptance of who I am in therapy, and his focus on what in the past caused this today, his in depth understanding that behaviors happen for a reason, and his desire to help me find the reason. I feel safe with him, even though I do panic after session sometimes from feeling vulnerable. I think that he models flexible boundaries, he validates my emotions (which often cause my emotional upheaval), etc. I am going through similar reenactments but they are being handled differently, and this has been healing.