Even her name is fake. She is a ghost. A living, breathing ghost.
-- Narrator (chapter 8)

Importance: Lucy has been living as a homeless woman with no real identity to claim for her own. She illegally came into France without a passport or any sort of documentation showing who she is. Because of this, she cannot hold a regular job and has depended on her busking for an incredibly small income. Nobody knows her real name or anything about her past, not even her ex-husband and her two young children. However, this anonymity makes Lucy difficult to trace, which will help her get away from Michael for good.

I could tell I was different. Completely different. There was no one like me there and I had fantasies about going to the big school and finding myself surrounded by people like me. Everything would be better at the big school.
-- Henry (chapter 9)

Importance: Even at a young age...