If there is something mistress Khali hates, it is being taken for granted which is what this guy did. She was not going to let it happen and that is why she opted to force this guy to do so. The mistress had fun torturing him and by the time she was done with trampling him, he had realized he could not do it again and get away with it so he apologized and promised never to do it again.
This farmhand was negligent and mistress Khaulisa's crop did not do well. She had a poor harvest and it was all down to him so she had to punish him. She did it in a cruel way and turned him into a human ashtray. In addition, she spat on him and humiliated him to show him that he had to change and also compensate her for the poor yield she had gotten.
Mistress Khali felt that she had to dominate this guy and she did so using her feet. She trampled him to give him a taste of her trampling fetish and she also went ahead to have fun at his expense. The guy had to smell her smelly shoes and she even tied them to his face covering his nose so that he could continue smelling the sweaty and stinky sneakers.