Some writers can mask their characters’ inner worlds with plot, description, and dialogue. Some can tear off those masks and show us a startling reflection of our own inner worlds in those characters with a gently placed sentence at the end of the book. That’s what Strout does. She disguises the inner world for most of the book and then, BAM, you read a sentence and your own mask has been suddenly ripped from you. Not a bad way to write and to make a difference in a reader’s life.