River's been known to be more formal than a situation strictly calls for herself, on occasion -- not to mention having the kind of Core upbringing that gives one a fair amount of formality to draw upon. Anyway, she doesn't seem bothered. She smiles, small and brief, and like many of River's expressions it makes her look younger for a moment.

"I said."

She slips into the room, letting the door close behind her.

"You're hospitable," she adds, serious and affectionate. "It's a virtue."

In case Sallie wasn't sure!