second post.

"So I hushed and Caddy got up and we went into the kitchen and turned the light on and Caddy took the kitchen soap and washed her mouth at the sink, hard. Caddy smelled like trees."

This quote syntactically draws all the readers attention to Caddy. The fact that Benji is once more saying that Caddy smells like trees, shows that he is beginning to see her as he used to, when she was still a virgin. Her washing herself is a metaphor for purity and her virginity, and that's why Benji is once again saying she smells like trees, because that is the Caddy he has always known and loved.