Amelia, i can't begin to imagine what you are going thru, and i'm sorry you are going thru it all. It makes total sense to me that you want to let go of things that happened in this life, you want to go forward into what's to come unburdened and ready for whatever comes next. I think that's a good aim.
On a practical note, maybe you could agree with your therapist to be vocal about what you want to deal with each day. So she knows whether you need a soft day or a "go at me hard" day. That way you're both on the same page?