I think if anyone has talked to the county sheriff he'd have told them that if this guy has ever threatened to kill someone it will probably happen, so be happy to get him into jailhouse custody ~ they'll make sure he gets his drugs, or wish he had! Sounds primitive doesn't it ~ but he's a 51 year old man up against an old lady. In jail there are some tough dudes. Maybe he has enough control over his psychotic episodes to let one of his wiser heads prevail.
Remember, if he does kill someone he will end up there anyway.
It has been my experience that the police don’t do anything when you call them and tell them that your spouse tried to kill you. My mother’s husband tried to kill her three times and called the police. They told her that it was a he said, she said and that they couldn’t do anything, despite the bruises and marks on her neck. The truth was that they didn’t want to take financial responsibility for him. They figured if they didn’t do anything, she would have to have him committed to a care facility.