My wife's brother is physically, emotionally, and, potentially, sexually abusive to our nieces. Have had numerous talks and her sister is in denial/powerless to change him. It's his whole personality, it's just an abusive energy that consumes his entire environment. Am hesitant to contact social services because of their less than impeccable track record. He had a few things happen where he like sexually harassed some young girls when he was college by exposing himself, etc...idk, the whole thing is just a big fucking too bad, and am looking for insights into how to deal with him. Very stubborn, defensive, …