As far as I remember, in that episode it was only the first book, meanwhile we have eight.
You could write Tiff excitingly rambling about the first part, while reader is not completely listening/not catching up with what's being said, and then reader maybe mentioning another part and what happens in that bit.
Maybe even reader explaining that their species had not two, but 8 parts.(I've read all the books once and there were parts that I skipped, because it looked too boring and it was mainly the last parts.)
But you can feel free to skip that episode, and also ignore this comment!