Mistress Narziss felt that she had to dominate this guy for taking advantage of her kindness. She used her boots to punish him and she had him lick them first and when he was done, she slapped the shit out of him. Before she let him go, the mistress trampled the guy with her boots and she warned him against making any noise as she punished him. He never took advantage of anyone else.
Mistress Narziss wanted to send a message to this guy and she used her high heel boots to do it. She stroked them gently and in a seductive manner as the guy watched in amazement. He found himself drawn in by what she was doing and in no time, he was under her control and he did all she wanted him to do. That is how she realized how powerful what she did was.