Zoë does, indeed, know what Kaylee means. After so many years together on Serenity, it was only a matter of time.

"Tracy?" That doesn't make Zoë happy at all. Kaylee'd been injured and Mal'd been forced to kill the boy. And it means that the girl's missing the most about the future and knows absolutely nothing about Wash's death. "Well, this should be interesting."

Now she sorta knows how Simon must've felt. And she's not sure she really knows how to tell her what's happened.

"Get dressed. We need to talk about something important."