Sofia describes her job for the mayor and his wife as slavery. Her son takes offense at the word "slavery" and says she’s a captive —not a slave.
Sofia teaches Miss Millie, the mayor’s wife, how to drive. Finally, Miss Millie takes Sofia home for Christmas—the first day Sofia’s been home in five years of working in the mayor’s household.
Sofia ends up only staying for fifteen minutes because it turns out that Miss Millie doesn’t know how to back up out of the driveway and she refuses to let a strange black man drive her home. So she makes Sofia drive her home. To top it off, she acts like Sofia should be grateful.