It's got everything to do with her leg, but she's not brought it up or talked about it because of two reasons - no one's asked, and moreover... this isn't about her. She can tell him that she relates, that she knows some of what Spencer's going through. She can worry about both of them, but her leg... That's something else.

She nods when he says Spencer's very important, but she leans to catch his eye. "He is," she says with a nod, but then- "And so are you. You know that, right? That it's okay that you're messed up by this, to? It'll get better, but it makes sense."