Sounds like her boss has this...
Sadistic Personality Disorder -
This disorder is characterized by cruel, aggressive, manipulative, and demeaning behavior directed towards others. Abusiveness and violence are common in the sadist's social relationships, because the sadist lacks concern for people and derives pleasure from harming or humiliating others. There are similarities between sadistic PD and the more aggressive antisocial PD, however, the antisocial person does not generally hurt others just for pleasure. There may also be an association between sadistic PD and sexual sadism, in which the person derives sexual arousal and satisfaction from sadistic acts like beating and humiliating someone.