My wife's ex-husband is diagnosed with NPD and antisocial behavior. He continues to torment my wife on a regular basis, and even worse has been mildly successful in alienating my 14 year old stepdaughter against us and our life in general. We've made it this far by turning the other cheek and taking the higher road but I cannot bear the thought of completely losing the relationship with my stepdaughter if he continues to "brainwash" her against us, or if God forbid he moves on to physical and/or sexual abuse with her as a next step. He does seem to be slightly intimidated by me though I've never got in the habit of getting in the middle of things. So my question is, can I use intimidation and threats as a means to successfully alter his behavior? I'm not asking you to advocate physical violence or anything of that nature. As an example, I would possibly threaten to show his family and friends the psychiatric evaluation that talks about his personality disorders and abusive behavior. What are the chances that this would be successful, and more importantly would there be a chance that the backlash is in fact worse than what we're dealing with now?
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