Goddess Gabriella wanted to use her whips to dominate as well as to torture. She had to do it because they had conned her and she was not going to let it slide. She had to act and she did it in a way that they never expected her to do it. The mistress needed them to make it up to her and they had no choice but to do it.
Goddess Gabriella can tolerate many things but she cannot tolerate betrayal. When she felt that this slave had betrayed her, she had to punish him and she did it with her whips. She made sure that the slave was whipped on his bare back so that it would be as painful as she needed it to be. It worked out as she wanted it to be and she degraded and taught him a lesson.