She might get him back in the arena or during training though I don't think he's being shirtless to really trying to get her anyway.

And I don't know if it would be a stretch to have them both get a nightmare the same night, I mean siblings do share a connection with each other. And the training would have effected them, I'm sure. And it's not like I'd think Katniss and Prim would really knw the other was hurting since their rooms are probably on opposite ends of the floor. *shurgs* If you'd rather not do them together, that's okay too.