Lady Electra wanted to show this guy how pissed off she was with what he had done. So she called him and she made him lie down. Instead of trampling and smothering the slave like she normally does, she jumped on him because it was more painful that way. And she did not just jump on him anywhere. She jumped on his face and crushed it with her feet for added pain.
Mistress Helga is a cruel one. She is one of those mistresses who do not easily forgive. When one messes with her, she always looks for a way to pay them back. She does not have a standard way of punishing slaves and losers. She customizes them depending on what the loser or slave has done. This slave's mistake today only warranted him licking her shoes and being trampled on and she did it.
This mistress has a nice ass and she enjoys using it to humiliate slaves and losers. She knows many of them cannot score with hotties like her so she teases them knowing that they cannot say no to her. She then makes them do what she wants such as masturbate according to her instructions or humiliate and torture them however she sees fit. Luckily for them, she was not in the mood to torture them.
Mistress Sia wanted things to go her way. She had worked on her project for long and she did not want any surprises. So she went to the only person she was not sure about and she crushed him and humiliated him. She trampled him and left him in a lot of pain and told him to stay away from her project. The guy was rattled and shaken that he did as she wanted.