Nel befriends Sula and they grow into adulthood together. Sula has an affair with Nel's husband.
Nel and Sula see each other for the first time in three years. Sula fails to apologize or offer any real explanation for the affair.
Sula dies without having mended her relationship with Nel. It's not until after Sula is gone that Nel realizes how much she misses her. She visits Sula's grave and finally really mourns for her.