It's a very good thing Kate didn't ask those questions. It would have made the moment so much sadder and even awkward. Kate can't imagine having a child so young and then having to give them away. Sure, it was probably Steph's choice or what was better for her, but it's something Kate can't wrap her head around.

"I'm sorry." She's saying it because there is nothing else she can say. Kate isn't going to judge Steph for what happened; it's stupid and not her place to. But she can worry about how much of an effect this has had on her friend and she can pull Steph back into her arms for another hug.