Lady Scarlet realized that this guy was a conniving bastard and she did not want any part of it. She wanted to deal with someone who was straightforward and this guy was not. So he had to be punished. The mistress used her hard slaps on him after she had caged him. He was had cramped muscles and could not defend himself against her hard and cruel slaps. He stopped that habit.
Mistress Jenny-Nina is a cruel girl and she likes it that way. She felt that she needed to practice a new way of humiliating and punishing slaves. So she tried and practiced faceslapping fetish. It was all fun for her and she knew it would be even better when she finally slapped an actual person and watched as they saw stars and struggled to control themselves after her hot slaps.