For me (dealing with childhood abuse in therapy) my T is re-parenting me in terms of being a witness to my story, validating my experience, helping me deal with the aftereffects, etc. We are working on some attachment issues as well. I feel (in a sense) she is helping me 'grow up' - or helping that child part of me grow up and resolve some of those issues that I wasn't able to with my own mother. It's been helpful for me, though I can see how, taken too far, it could cause more problems than it could help.