It seems that a lot of people dislikes this last part the most, and for me is the opposite since i enjoyed it more than i did compared with the other two. Without spoiling anything, I'll say that I felt the reveal was fitting and I was left satisfied with the ending. It was sweet. I enjoyed the characters, especially Silas. Overall, it was a quick, entertaining little ya series.
This is definitely classed as a YA story, a bit fantastical and at times an exciting read with some nice cute moments. And this last part was sweet...really sweet in that unicorn and rainbows sort of way.