Steve nods thoughtfully, but he doesn't dwell on the subject for very long, especially since it seems as though Lexie has mixed feelings on it. "I've got a sister too," he admits, watching her quietly as she moves around the clinic. "Younger. I actually just saw her a couple months ago, back when I was at home. She'd come for a visit." His smile turns soft, momentarily reflective. "It'd definitely been a while since we'd seen each other, and the circumstances before that weren't exactly ideal."