With Kain it's going to be the size difference, the force he can put behind it. If she can tire him out by being smaller and ducking lower - but she instead feints to the left, rolling her shoulder when she can to get some feeling back in it as her hand flexes to keep the grip on her blade.

And then she steps closer, kicks a leg out at his knee because there are duels then there's just a fight, and Kain didn't come to meet her with any rules of engagement here so no one said she needed to play fair.