Mistress Kira headstood on her boyfriend to pump some sense into his head. He was not behaving how she expected him to and she had to express her displeasure at what he did. So she used her trampling fetish to show him how she expected him to behave. And she relied on the pain he felt to get through to him as she knew he could be adamant at times.
This mistress felt that her slave was too much of a sissy and he needed to be toughened up a little. And that is what she did as she forced him to do things her way. The mistress gagged the loser using her foot as she stuck it in his mouth. Next she trampled his face and she crushed his head and he nearly screamed as she did her thing but she told him not to make a sound.