Cruel, I am sorry this is happening but welcome to life. These things are going to rise up and smack you in the face from time to time, and how you handle is a measure of who you are.
It sounds like you may need some counseling.
Talking to others who have gone through, or are going through this is great......but get some local help.
It is ridiculous to set a detective story in New York City. New York City is itself a detective story...
AGATHA CHRISTIE, Life magazine, May 14, 1956