Lady Stefanie lost out on some income generating activities and other ways to make money from the office and that pissed her off because her supervisor was behind it all. She had to get from him what she felt she had lost out because of him. So she turned him into a financial slave and it was easy due to her experience, charm, sex appeal and good looks. She got what was due to her.
Lady Stefanie knew that this guy was a miser. She had to find a way to punish him and she knew the best way involved financially dominating him. So she played with him and she let him believe that she was into him when in fact she was not. Then she went ahead to dominate the poor guy financially when she had him where she wanted him. He regretted falling for her trap as he had lost a tidy sum of money.