I liked how everything was resolved and explained in the end.
A tiny criticism, though, is that by the way Ben was introduced in the first book, I totally expected that Kyla knew him before she was slated. Like she didn't consciously know who he was but at the same time she recognized him in some deeper level. And in any case, WTH happened to Ben? That was a loose end I didn't care for AT ALL.
I would've love to have a few more chapters after everything was explained, like a loooong epilogue.
But, overall, it was a really satisfying to tie up the trilogy.