Mistress Wael did not like the kind of work that her plumber had done. She felt that she had been ripped off and that her problem was not fully solved. She was so pissed at the guy that she felt that the best thing to do to him was to pee on him as well as to fart on him all of which she did to him before chasing him off her property.
Mistress Wael did not want to be associated with this intolerant guy and she had to ensure that she did something to him so that he learned to change and to tolerate other people as well as their divergent opinions. So she cruelly turned to her pee domination fetish and used her urine to torture him. He was degraded but he had no choice other than to change as he did not want a repeat of that.