DEAR ABBY: I have a former co-worker whose husband was just released from a psychiatric facility. He had threatened to kill himself and take the entire family with him. I met him before the incident. He did not seem balanced then, and I was uncomfortable being around him. Since his release, my friend keeps inviting me to their house and wants to come to mine. I keep making excuses for not allowing visits to my house or hers. I still have a bad feeling about being exposed to him and possibly putting myself in danger. I have been in abusive ...