Mistress Gilda was fed up with the way in which this guy operated. He gave her the silent treatment and she was pissed as she felt that it was immature of him. So she cruelly trampled him to make him realize that he had to talk about issues he did not like or whenever he felt wronged. And after the pain and humiliation he felt, he knew he had to change.
Mistress Gilda abhors disobedience and she had to punish her slave because he seemed to be disobedient. She felt that it was time to teach him a lesson he would not forget and this was by trampling him with her bare feet. She did it on his stomach and on his face before working on his balls. The punishment worked and he was never disobedient again as he feared the mistress.
Mistress Gilda noticed that this guy was lazy and she felt that it was up to her to do something about it otherwise she would have a hard time dealing with the guy and managing to control him. She had to make him change and so she used barefoot trampling to make him feel pain and to make him change as well. He did so as he did not have a choice.