Princess Serena wanted this guy to teach him some skills she needed but he was selfish and he did not want to teach him. She did not like his selfishness and she got him to change by punishing and torturing him as cruelly as she could. The mistress turned to faceslapping to teach him how to behave. And when she was done slapping him, she got him to teach her.
Princess Serena has her slave in between her legs but not in the way that he wants to be. She has her feet on his head and she's about to show him his place. She makes sure to grind in with her hard soles before moving to get her hands in on the action. She gives his face a few slaps and takes off her shoes. Then she slaps him with her naked feet, leaving the smell of her sweat on his cheeks.