Princess Kitty needed to pass a message to this guy and she tried her best to talk to him but he did not get the message. So the mistress had to do something he had never had done to him before which was to make him lick her feet as well as smell her socks. He had to lick the socks too before the mistress felt that the punishment was enough.
Princess Kitty did not want this guy taking advantage of her to do corrupt things. He was close to her but he was using their closeness for his own financial gain. He knew she was the boss at her company and he tried to use that to make money in a corrupt manner. She could not stand for it so she humiliated him with her stinky socks to make sure nothing of the sort happened again.