Goddess Kira wanted a new car and she had to make sure that she got it from her paypig. She had to be extra hot today for him and she had to make sure she brought her A game. By the time she was done with him, he had used his savings to buy for her what she wanted. He was smitten with her and she knew this and used it to her advantage.
Goddess Kira wanted to make sure that she degraded this guy and that he learned his lesson. Unlike many mistresses who used pain and humiliation to do what she wanted to do, she had assessed the situation and she realized that the best way to do it was to use findom fetish. So she turned the guy into a pay slave and she dominated him financially. It stung him a lot.