Kate pulls back at that a little, the statement taking her by surprise. "Since when?" This is a stupid question. Since Steph gave birth, obviously, but what Kate really means to ask is how old Steph was? Does she miss her? What are the details on the kid? What does she do with her daughter when it's time to do night patrol?

The option that Steph doesn't have custody of her daughter doesn't even occur to her.