Firstly I'm not bashing people with mental health, I have struggles myself.
A member of my family lives with a long term mental health diagnosis, that much is undisputed and it must be incredibly difficult for them to endure. I get that.
However, they regularly make the decision to stop taking their medication which they know they need to stay functioning and well. Their choice to stop their medication always coincides with something important going on in somebody else's life, think weddings, babies or big life events.
I'm about to give birth and this person has decided to stop their medication once again, causing a big panic within the family and worrying my DM sick, taking her focus and excitement away from her impending granddaughter and making it all about them. The same thing happened when I announced my last pregnancy, when my son was born, when I announced DD's pregnancy and now she's almost about to arrive.. they're doing it again.
We don't live together so babies are not a stress trigger for them.
She also did the same when my DB got married and my DM almost missed his big day because this relative (her sister) was causing a big fuss, again stopped taking her tablets.
The tablets work well and when maintained the mental illness is unrecognizable.
Today I told my DM that she's an attention seeker who uses her MH to control people around her.
AIBU to say that this is the case in a (probably very small) number of people.