Mistress Madison was pissed off at this doctor as he had given her a wrong diagnosis. She was not happy with him and for that, he had to be punished. He cried at what she did to him and he wished that she would let him correct the situation but she did not let him. She had to go to a different doctor as she could not trust him anymore.
Mistress Madison wanted to torture this guy and that is why she chose to dominate as well as degrade him. He had to learn his lesson the hard way and that is why she chose to do what she did. It was super fun for her and she had a great time doing it. The loser had a lot of pain inflicted on him but he could do nothing about it.