I am privy to an interesting situation at church. We have a ward
member who is not mentally balanced. She takes medication and is
living in a supervised setting. It doesn’t always work so well.
And even when it does work well and she socializes nicely, her
main delusion is still there. I have asked her enough times in
different ways to know that her thoughts are still distorted; it
is more a matter if her meds/self-control/verbal warnings have
been enough to keep her quiet at the moment.  Her main problem
is interesting. She believes she is going to marry the Bishop.
She says his wife is dead and that Heavenly Father wants her to
be the Bishop’s wife. The Bishop’s wife, who is very much alive
and well, doesn’t factor at all into her relationship with the
Bishop.  She hasn’t done anything about her delusion that I know
of. She hasn’t told the Bishop directly or done anything to
publicly embarrass herself or him or anyone else. She just talks
about their wedding day, which is always just around the corner
and h