why did she choose to marry a crazy man?
he was a diagnosed paranoid schizo, who was in a calm period ( probably Medicated) but then went off the rails.
She did not know until he had a crisis and was committed- the whole family kept it a secret. She got out eventually but I remember she could not divorce someone who was institutionalized so she had to wait till his release.
I was just a kid when this happens so I do not have all the info.
Someti.es people change. Male schizophrenia onset can be as late as 30 years old
Late onset psychosis can happen I 30s or 40s
Life is unexpected and messy.
There is no guaranteed recipe.