I'll be honest, I hated Whitley at first. She was just so disrespectful and cynical, and I personally could not relate. However, by the end, she did gain my sympathies and I actually grew to like her character.
Nathan was a pretty great character, and I liked him. I also liked that the mother and father were a bit more complex and not just 2D cardboard cutouts. I felt like the very end of Whitley's father's confession was a bit to easily given, but perhaps that's just me.
Overall, I found it to be a decent read and definitely different from the sappy, spineless Mary-Sue protagonists that YA literature has been infested with lately, but it wasn't spectacular. Kody Keplinger's protagonists are all pretty similar, and I was left just a little bit disappointed after finishing this.