Chapter 11 needs some proofreading.
There were a few typos during the hints and before the puzzle itself.
Chapter 12 too, a just as Rae and Liza are reintroduced.

Chapter 24: I thought L I E
I V Y
D A Y would be enough for the puzzle, so I was surprised it was invalid. Presumably the hint meant you can (Or have to?) use a word that stretches across both vertically and horizontally, otherwise the fact that the actual solution has less valid words seems weird. 

Chapter 28 has a typo during the exposition with "his his"

But overall, thoroughly enjoyed...even if my smol brain is now hurting from the puzzles.