Lunch-box dream

I have 40 pages left in my book. Over the last week the book has started to talk more about the other family. You begin to learn more about how a African American family grew up differs from how an American family grows up at this time period. They little boy goes missing over the chapters I read and the family is really concerned about him. Also as the other family drops off their grandma the emotion of the brother and mom towards bobby come out and it makes bobby feel like the family doesn't like him.