How does the author use foreshadowing in The Truth About Forever?

In Chapter Six, Macy's first visit to the area where Delia and the other Wish employees live further draws the distinction between perfection and chaos. Delia enthusiastically embraces chaos, and even refuses to fix the dangerous pothole in her driveway because she insists that some things are meant to be broken and it's the universe's way to providing contrast. This attitude foreshadows many other events to follow, including the comparisons between Wes' mother and Macy's father, and the way various characters in the book view the world. Despite her best efforts to maintain order and achieve perfection, the only interesting and life-affirming events in Macy's life occur as a result of chaos.