True, Kylo Ren did not dance. There was no combative foreplay. You were either fighting, testing the waters, or not. He would back off from a strike every once in a while to judge her motions, her speed and reflexes, but he did not go easy--he never would have, regardless of her requests.
He sliced through the air with another rapid hit, bringing the "toy" blade down at Katherine's shoulder. Once deflected he came in at her side. Deflected again he came in low. Then he brought up the blade and, rather than swing in a strike, he brought the blunt of the hilt down at her hands. If he could get her to drop her staff then this fight was over and they could start anew. Kylo had so few openings, though if she was quick enough this might be her chance.