Stop acting out themselves and Not permit themselves to be abused. Verbally abusive individuals are good performers in the legal system .
Abusive people are good manipulators.
They often con well-meaning therapists. These therapists cannot help their clients. Some therapists, blind to their own anger and abuse issues, may inadvertently hurt their clients - especially since the topic area is poorly understood. There is too much room for error . Also, other stuff could be going on - in addition to or instead of abuse.