Mistress Barbie did not want to have an accident at the expense of her driver. He was not careful on the road and she was not going to tolerate any of that nonsense. So she punished him and did it as cruelly as she was able to. The mistress used her shit to do it and he was degraded and humiliated but he changed as he did not want such degradation again.
Mistress Barbie did not like how her ex-husband was trying to get back into her life. She resolved to do something she had never done to him so that he realized she was not the same person he knew. So she made him her human toilet and she fed him her shit. He was shocked and was afraid of her, which worked in her favor as he stopped being a nuisance to her.