“The title is actually an echo of one of the last lines of the book. Everything I Never Told You refers, on the one hand, to the secrets that the members of the Lee family keep from each other—all the things they lock inside because they’re afraid to say them or they’re ashamed to say them. But it also refers to all the things they don’t say by accident, so to speak: the things they forget to say because they don’t seem important. After Lydia’s death, each member of her family thinks back to the last time they saw her and what they’d have said if they knew it was the last time. The things that go unsaid are often the things that eat at you—whether because you didn’t get to have your say, or because the other person never got to hear you and really wanted to.”