Lady Stefanie believes in choices having consequences. And as a result, she rarely forgives anyone who wrongs her. This slave wronged her today and he lived to regret it. The mistress used her hot ballbusting fetish to deal with him. She made sure he was in excruciating pain and that he promised never to do it again before she let him go. He could not even walk properly when she let him go.
Lady Stefanie is a competitive athlete. She wanted to win medals and she prepared herself for it. But she felt her coach was not up to the task. So she did something about it. The mistress forced the coach to kneel down and she ballbusted him cruelly. She made sure he was in pain from kicking him in the crotch so that he would learn to do what she wanted.
Lady Stefanie does not like people who cheat. This guy cheated on her and she crushed his balls cruelly using her bare feet. She wanted it to be a lesson to him that cheating was not allowed. She did it slowly over many hours so that he would feel maximum pain. She told him he had brought it on himself and he should not blame her. He had to blame himself.