Mistress Luciana felt that her friend was too timid and she needed to learn to defend and stand up for herself. So she taught her how to give really hot slaps. She came with a slap slave and asked her friend to follow her lead until she got the hang of it. Then she let her go and implement what she had learned and add her own flavor to it.
Mistress Iside and her colleague did not like the kind of answers that this guy gave them when they interrogated him. He had to be shown what they were willing to do to him if he did not change. That is why they felt that they had to torture him and do it in a way he would not forget. So they busted his face with hard and hot slaps.