This did not put Bert’s mind at ease. She wants to punish the disobedient girl. Trina deserves punishment ... Now the Mistress places her ass right on the girl’s chest for convenience, and makes her open the mouth and spits directly into her mouth, filling it with saliva and ashes. Trina's mouth is an ashtray for the Mistress. By the end, the whole mouth of the poor slave is full of saliva and ashes.