Madame Marissa and lady Nora forced this guy to endure boot torture because he had been insubordinate to them. He was punished for it and he had to learn that he would never get away with that behavior. The mistresses laughed at him as he cried and begged for mercy. But they knew that he had learned his lesson as he did so and that is why they let him go.
Lady B was bored and had nothing better to do. Being a mistress with a fetish for crushing, there was nothing else she was going to do besides crushing things for fun. She had a few balloons left so she inflated them and she had fun crushing them. The mistress enjoyed the sound of them popping and she managed to pass some time before she went to look for something else to do.