Hey Claire!
Just catching up with your neighbor horror story.
Sounds to me like he has dementia. Tragic and awful and not easy to live with! (Or next to, as the case may be...)
I think you've gotten great advice.
i'd also suggest that you call the police any time you have an issue with him -- in fact, it may be helpful even to call your loal police department and ask if you can come in and talk to them about these problems when you all are not in crisis mode -- I've found that this can be helpful in enlisting police as allies. A "what can I do to help this poor guy and his wife and protect myself and my household" question can sometimes open up some really good ideas and support.
Hope you find peace! I feel for you and Mike, and most especially for his poor wife. (And, truthfully, for him, too...sounds like he's living in his own private hell...
xoxox
Leigh
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