Stef's untraditional family offers an inside perspective on how a lesbian family is just like any other traditional family. Although, what is traditional these days? Stef comes from a Catholic upbringing, where being gay is heavily unacceptable. She's a strong role model for those who struggle with religious implications.
Corey chooses to give his mother another chance when she proves she's clean and sober. He wants to leave, but he also tells Stef and Lena how much he loves them.