I may not have killed him with my actions, but I definitely killed him with my inaction.
-- Narrator - Kenna (Chapter 1)

Importance: Kenna makes it clear from the beginning of her narration that she considers herself responsible for Scotty’s death. She tells her reader it was her inaction that caused Scotty’s death, confirming right away that Kenna did not intentionally kill her boyfriend.

And not in a way that I’m left breathless by her, but in a more substantial way, as though my brain is warning me not to interact with her. Red flag! Danger! Abort!
-- Narrator - Ledger (Chapter 4)

Importance: It is not until after Ledger realizes that the woman who has told him her name is Nicole is really Kenna, Diem’s mother, that he understands his initial reaction to her. He later believes it was because Kenna looks so much like Diem that his subconscious was trying to warn him, but his mind did...