how would you analyize chapter 15?

Obi thinks he is much closer to his mother, but he moves as far away from her world as he can. This is foreshadowed in the childhood incident where he tells one of her folktales but cannot resist embellishing it. The incident with the knife where Obi's mother is wounded by his razor symbolizes his real wounding of her when he moves away from his heritage.

Obi's inability to stand up for Clara, both in front of his parents and during the abortion incident, reveals just how hollow he is. He remains paralyzed, unable to decide what he really wants. He lacks a moral center, something that will be clearer once he accepts the bribe.