To start with the great - Casey writes characters so well. I would die for Rory and Smith. I think for some young queer kids, the discussions some of these characters have around sexuality and gender will be really meaningful, and for that reason, I'm incredibly happy this book exists. 
However, I didn't think the narrative really worked. Almost none of the machinations that went into the "missing" Shara made sense, and the main character's ~realizations~ at the end of the book were so clear from the start that every time she denies what she's feeling, especially past the first half of the book or so, I was unconvinced and felt like the author was trying to pull one over on me. I appreciated that the author attempted to tackle the difficult issue of religion, southernness, and bigotry combining in the South, and I have a feeling this will be helpful for some kids too, but to me when religion comes up it feels like it's just to say that they haven't forgotten it's part of the story.
The audio narrator clearly committed hard to this performance, but at times, that went a little overboard - there are probably 20 characters with different voices, so it makes sense that they turn a little ridiculous. A few of them, the high school girls especially, sound like mean caricatures of girl voices. 
Many thanks to NetGalley and the publisher for the advanced copy of the book!