This guy was cruel to his own family and as their neighbor, mistress Maryan did not want to continue witnessing it. She had to step in and help and she did this by cruelly turning the guy into her human toilet. The guy could not believe it and her strength scared him. He ate her poo but he also stopped being cruel to his own family as he knew she would make him pay for it.
Mistress Maryan found out that this guy had misappropriated funds and she was pissed at him as she did not expect that from him. She used her shit to punish him so that he would never do it again. The mistress wanted to make it as cruel as she could so that it would act as a deterrent. And it did as he never did it again. He feared the consequences of his actions.