A rupture can generally only be repaired well when the therapist is non-defensive. Unfortunately, in my experience it is very difficult for a T to be non-defensive enough to allow the full range of client's feelings about the rupture to be expressed and heard. It's human nature to get defensive when they've made a mistake and therapists aren't any different overall despite the training. All that said, there ARE many exceptions to the rule, my current T being a pretty good example.