Mistress Marlena wanted to do something about this guy's forgetfulness and she did so with her shit fetish. She knew that she had to make sure that he got the message for him to change as she did not want him to change or do anything that she did not like or want. That is why she had him as her human toilet and her human toilet paper as well.
Mistress Marlena took a shit on a dog bowl and she then wore gloves and she used her hands to feed this slave her shit. The slave had no choice but to do what she wanted. He regretted why he had done that but she did not care. All she needed was for him to eat her shit and he had no choice but to do it the way she wanted.
Mistress Marlena needed to shit on this guy and she chose to do it without looking back. The mistress felt that the guy deserved to be punished for what he had done and that is why she did it without thinking hard about it. The poor guy had to drink her pee and he had to lick her shit until he had managed to eat it all. That is when she let him go.