[
After this.]
Kim's hair is pretty unmistakable. Meg can, therefore, spot her sister from the doorway, and is about to go over to her table, when Kim gets up and heads for the infirmary.
Meg stops, and stands, and watches. Kim's back may be to her, and they may be able to count in days -- rather than months or even weeks -- the time they've spent in the same place at the same time in the last three years . . . and Meg can read her mood anyway, from the way Kim holds herself and the way she moves.
There's a moment's hesitation, and then Meg follows her sister into the infirmary.
With almost anyone else, Meg would opt for the somewhat less presumtive is everything all right?
But with her sister . . .
"Kim? What's wrong?"