If she was always that light on her feet, why didn't she OPEN with that? I THINK being wary of one's 'physical integrity' is supposed to be a concern for their safety (hence in the insistence on wearing headgear), so why does Boris continue to pummel her after that first punch? That's not how concern works. Why is she more capable to taking a punch from a brute like Boris than he is from a little thing like her?