Give it time - it's a good sign that she is not treating you differently.
I don't know your full story but I am guessing you haven't been a non-witness very long. At first conversations are going to be strained. Neither of you want to hurt the others feelings - or step on any toes. Eventually you will be able to feel out where that line is. Your conversations may change, but they can still be as deep and meaningful as you want them to be. Being "fleshly" does not, to me anyway, equate "shallow".
I am guessing you feel distant because the one thing you had in common was the "truth". Really - you just need to find something else you can share.
Personally I was never close to my mother growing up. I felt like we were strangers to each other who would just never understand each other. It's actually after I've left, and become my own person that I better understand her and her motives. We're closer now than we ever were.
My point being, if you two were close before - and want to be again - you will be able to with some time, effort, and good communication. I have no worries that you'll eventually figure it out. You both sound like you want to keep your bond going - you're just struggling right now to re-define your relationship, and that's ok. You'll figure it out. Heck if my mom and I figured it out - you will too.
