 Callie initially doesn't feel comfortable around her due to her position as a cop, but gradually forms a close bond with her.While Stef likes to act tough around everyone, especially Lena, it is shown that she cares a great deal about her wife and family, although she won't hesitate to discipline her kids if need be.Lena Elizabeth Adams Foster (season 1–present) is Stef's wife, Brandon's stepmother, and the other children's adoptive/foster mother.