I find a certain amount of strange behavior is common, though not expected. One of my Mormon friends said that strange people frequently come to “try out” the church. They are drawn to what they have heard, whether real or imagined.
We are really close with our Mormon neighbor. She and her husband were separated for two years before we were told. We knew, of course, but it’s never been discussed,
She had been a member since she was 8, and was 60 at the time. She wasn’t ‘strange’ but a ‘worthy’ temple worker an a ‘pillar’ by appearances. Reality was vastly different. she was a widow, but they were married in the temple etc. Her neighbors said the same thing about her, how nice she was etc but they didn’t have to live with her either.