Devon often asks Cai's victims if they are good people. Do you think that Devon is a good person, by the end of her arc? What about at the beginning of her story?
What is the difference between a bad person who does good things often, and a good person who does bad things often? At one point does a good person become a bad one?
One of Devon's main goals is to break the book eaters' pattern of abuse, and generational trauma, when raising her son. Do you think she achieved that? In a similar vein, do you think the cost she paid was worth the end result?
Sometimes readers express (very understandable!) frustration that Devon only stands up for herself after she has children, which is arguably anti-feminist. Why do you think she waits so long, and what does that say about the social values she has inherited?
If you were in Devon's place, what would you have done differently, if anything?
Who do you think is the most monstrous person in the Book Eaters, and why? Who is the best, if anyone?
Devon comes to believe that change is not possible without violence, though she perhaps never says so explicitly. How do you feel about that? Can society change without violence?
Is Cai still Cai, at the end of this story? What makes a person themselves, as opposed to other people? What makes a book eater themselves, as opposed to just books they've eaten?