During this stage, you look for and correct any mistakes you may have made, and/or change a few things to make the writing flow better. Hope this helps you!
Answer:
The novel is a story-within-a-story. Creech writes about Sal's road trip to Idaho with her eccentric grandparents, and during the trip, Sal tells her grandparents about her friend Phoebe Winterbottom and the disappearance of Phoebe's mother.