As much as I appreciate what this book was aiming for, I just couldn't really come to care as much as I should have. I couldn't stay interested in the story.
I think that having read and loved Pet before reading Bitter made this one "less interesting" by the fact that we already know (to some extent) what's going on, what will happen, what the vibes are. (I am terrible with prequels for these exact reasons)
The incredibly intriguing ambiance and lyricism of Pet felt absent in this book. Bitter was more of a revolution in a YA contemporary book, which doesn't make it bad, it just makes it different than what I was expecting.