[He's not wrong. That was part of it. She has them sometimes from her workouts especially if she manages to get a sparring partner. And she didn't want to treat him like he was fragile. There's also the part where she tended to see them when they were...otherwise engaged and she was very distracted.]

Training is a good idea. [Anyone from a post-apocalyptic civilization is likely to say that, right?] And the only way to get better at something is to work at it. There's never a reason to laugh at someone who's making an effort.