Lady Deina did not want her slave coming home at late hours. She wanted him to respect her home and to come early when she sent him. She had to send a message to him and she did it cruelly for him to understand her. She forced the info into him by trampling him on the face. She crushed his head with her bare feet and she made him cry.
Lady Betty realized that her slave had messed up but instead of telling her, he hid that fact from her hoping she would never find out. She was pissed when she found out and told him she would have forgiven him if he had gone to her first. Now she had to teach him a lesson and she did it using her boots and her spit. She humiliated him, tortured him and degraded him.