I think Laurie's Keller story 'We are growing', resonates because when you have that amount of independence, you're starting to ask yourself questions that the grownups in your life have been answering for you. Before that, you are a good kid, or you are a funny kid, because you're told that's who you are. But when it's just you and the book, you have to figure out who you are.
Mo Willems