In season three, Christy and Bonnie find themselves in unfamiliar territory: they're getting along! They will continue to rely on their sober friends, Marjorie, Jill and Wendy, for support and together, they'll offer encouragement to newcomers to their group, including Jodi (Emily Osment). Also, Regina will make a life-altering decision that affects everyone, and Christy will continue to be challenged by the facts that Violet is engaged to a man 22 years her senior and Roscoe is spending more and more time with his father and his girlfriend. In addition, Christy will get a new boss and Bonnie will reconnect with her biological mother.
Christy and Bonnie have different ideas about forgiveness when Bonnie's mother, Shirley, who abandoned her as a small child, suddenly wants to be a part of their lives.