doubt a parable

After listening to Father Flynn's sermon, Sister Aloysius is certain that the priest is involved in an inappropriate relationship with the school's first black student, Donald Miller. When Sister Aloysius calls a meeting with Mrs. Miller, Donald's mother, we learn more about her privilege and her inability to understand black motherhood. During her conversation with Mrs. Miller, we learn that Sister Aloysius was once married before she became a nun—this small detail provides us with a bit more information about Sister Aloysius and hints at her vulnerabilities. After she forces Father Flynn to resign by constructing a lie about his past, she confesses her sin to Sister James and thus admits her fears.