While I think I experienced aspects of re-parenting, we never talked about it in those terms. My T's interventions were certainly addressed to those areas where I had a psychological deficit. But we had a Father/daughter dynamic/transference naturally, so the interventions grew from the relationship, rather than as part of a technique within a specific modality. Somehow, it feels different from what you're describing. I'd be interested to hear more of how your T explains it.