Mistress Gaia had a new slave and she wanted to warn him against crossing her path. She found it better to let the slave know what she was capable of as opposed to letting him cross her path then find out. It was much easier that way. So she slapped him brutally to send a message that she was not one to mess with. The slave understood and never crossed her path.
Mistress Gaia loves punishing slaves. There is nothing that makes her happier than when she is punishing and humiliating a slave. She is so good at it that her friend wanted to learn from her. She agree. She made a slave wear a sack before she tied his hands to his back and slapped the crap out of him. She slapped him hard and left him with red marks on his face.