Maybe you can let her be your mom for a little while? I had to do that with my T. We talked about it and it was very honest transference that worked to help me heal.
Even my little one made him a card that said "Thank you for being our new daddy"

I am learning now how to take care of my own inner child. But while I have my training wheels on, it helped to have T fill that role that was not filled by my real dad.