Princess Serena came home and she took out her anger and her frustrations on her grumpy slave. He was not without blame as she had always had an issue with his grumpiness but she always found a reason to overlook the issue. But today she did not and she had to make sure she punished him. That is why she turned to her riding boots to punish him and it worked.
Princess Serena wanted her slave to know the kind of person she was. He did not understand her at all and he assumed that she was someone he could control however he wanted. So she did the best she could and used riding boots to dominate the guy. The slave was in pain and she used that pain to send a message to him as well as to control him.
Princess Serena felt that she needed to send a clear warning to her new slave and she did it with her riding boots. The mistress jumped on him and trampled him painfully. Thereafter, the mistress had him lick the soles of her boots before she was done with him. He never pissed her off again as he knew what she would do to him. It was a warning well executed.
This mistress had been lenient enough with her slave and she felt that he had to learn never to piss her off. So she came up with a way to punish him and that was by torturing him in a way he had never been before. So the mistress rode his back and as if that was not enough, she also made him lick her riding boots before slapping him hard.
Lady Nora found this guy awkward and he did not do anything to try to make the awkwardness any less so. She therefore had to humiliate him so that he tried to be a little relatable. She was not chasing him away but she wanted him to get out of his comfort zone. That is why she ,made him lick her riding boots until they were as clean as she wanted.