4. We cried: "Fun Girl Stuff And Eternal Salvation" (Episode 22, Season 2)
When Christy's son, Roscoe, boldly announced he wanted to live full-time with his father, Christy's world caved in and caused her to flee from her own mother. However, Christy soon realized she was just running away from her problems and eventually returned to Bonnie's house.
Part of the reason why Christy came home was because she missed her mom and the two bonded with a tear-jerking heart-to-heart conversation. This was an emotional moment Season 2 finale that no one saw coming, especially Bonnie.