Mistress Nica was pissed to learn that her friend's boyfriend had a thing for her. She tried to tell him to stop it but he insisted and made her uncomfortable. She was not going to stomach it so she forced him to lick her high heels and she used her heels to trample him. The pain and humiliation made him not only stop bothering her, but never cheat on his girlfriend.
Mistress Nica loves her horse and when she found out that her new slave did not feed her horse or clean the stable properly, she was angry and felt as if she had been personally violated by his inactions. So she took him to the stable where she trampled and humiliated him. She even let him sleep there for a night so that he learned his lesson and never repeated what he had done.