Goddess Nemesis does not like dealing with crooked slaves. This one was and she had to punish him for it and she ensured that it was as painful as it needed to be for him to learn that she would not let anyone mess with her. He cried at the pain he felt but she did not care and she continued with what she was doing to him with her huge strapon.
When this guy stole from her, he did not know that he would be caught. He did not know that the resultant punishment would be crazy and out of this world. That is why she went out of her way to make sure that he felt pain and that he would never steal again. This was done by forcing him to endure ass fucking from the mistress's brand new strapon.