Lady Victoria wanted to try ball torture and she did it in a way no one had ever done before. The mistress felt that the best way for her to dominate as well as humiliate the guy was to use ball torture fetish so she did not hesitate to do so. It was cruel but it had to be done and the mistress did not hesitate to do it her way.
Lady Victoria did not mind how forgetful this guy was. But he had forgotten something so crucial to her that she had to punish him. She was so pissed that she felt only ballbusting him would make sense and would be equal to what he had forgotten as it was going to cost her a lot. The mistress endured that he felt pain commensurate to what he had done or rather forgotten.