Billie... isn't going to laugh at him. She keeps having to remind herself of that and, oh, it is really hard right now, especially since, of course, she notices him going red over a bad throw. So, no, she won't laugh. She can't help smirking over it, though, since she doesn't feel any particular need to be wholly emotionless like some assassins do.

"It does count," she disagrees. "Just keep failing until you don't. That's not hard. You know, so long as the failure doesn't involve hitting me with it."

Then they'll have a problem. That in mind? She's carrying on further than just a step back and moving to sit on the back steps of the smithy. Strange is the one who needs to stand there and chuck knives, not her, so here she'll stay until he actually has a question or needs another demonstration.

"Just keep at it."