[He feels his heart sink when she starts to pick up her things. He racks his brain from something to say to keep her here, at least until he's found a way to apologize. He nods toward the target boards]
You must have received it a while ago for you to be this good.
[He cocks his head on one side, his tone definitely appreciative of her talent. From a sharp shooter point of view, he can see that she's a very good shot. Somehow, he feels the need to let her know that.]