The sheepish grin? Just gets a laugh out of Primrose, quiet in consideration of the fact at least one of the others in the household might be up by now. It hadn't been an accusation and she knew Katniss hadn't taken it like that, but it was...fun. To tease Katniss about something normal.

That, too, was a luxury.

"He was nice when we talked." She hadn't heard about or seen the fight, though, and didn't know how he had been before. ...And it was logical to be nice to the little sister of the girl you were sort of dating. "He gave me a knife, and said he made it himself."

She's fairly certain Katniss would approve.