Tess is really starting to enjoy the only freedom she's ever had from societal expectations, and we're getting more back story. I am really enjoying the journey too, and the scholarly adventure of pursuing the truth behind a creation myth.
My only disappointment is that I don't remember more detail from the first two books.
Edited to add: why is it so hard for me to remember to tag my Bingo posts? Every single one I've had to fix after posting. Doh!