[Yeah, no, she's not so sure she buys that. Still, she wonders if maybe she's just interrupting--Brook was good friends with Katie, if she remembers correctly. This might just be a private sort of thing for Katie.]

Ah. I'll just leave you to your practice then. [Vivi begins to retreat from the room again, taking a few small steps back toward the door. Before she reaches the doorframe, however, she pauses.]

Since you're here, would you like something to eat? I could fix you a plate... [She seems to remember Katie's a fan of fish, and she thinks there might be a little leftover in the fridge.]