When she takes her slave out at midnight, it's only to feed him. She knows that he is a worthless slave and that is why she only feeds him at midnight. She takes him to the worst parts of town and dumps his food on the ground. As soon as she has it on the ground, she is happy to crush it. He hungrily licks and sucks the food off the ground and the bottom of her boot.
When Mistress Lydie finds her slave in the bathroom eating, she has no choice but to punish him. She uses her high heels and shoves the chocolate cake into his mouth. She takes the fresh strawberries that he is hording and shoves them into his mouth as well. When she is finished, she takes off her shoes and crushes strawberries into his skin. She hopes that standing on his stomach and telling him how worthless he is helps him understand her anger.