She should tell him he is a narcissistic abuser on his face. I am one of those who believe that this is more a preferred behavior because one has been getting away with it rather than a disorder that one has no control over. I could be wrong ...but these days too many acts like Selfishness,entitlement, big ego etc get categorized as disorders hence relieving the abuser of the accountability for their bad behavior . Most narcissistic people I know are ones who have been pampered sick and made to believe they are prince or princesses. This I feel is just an abusive person who has got away with bad behavior because of support from close ones or lack or accountability for the bad behavior. Either ways this guy needs to go to a third person like a counsellor and shown a mirror. One thing is for sure that such people don't change unless they risk losing someone / something because of their behavior. It could be anything ... A person ,family,reputation,comfort .