Do you realise that you travel on planes, trains and on roads with people every day that are contemplating suicide??? You work with them, can be married to them, are parents to them... are just friends to them as well??? 

It is a thought that many people have and that most people will never act on. 

The very fact that they were getting a divorce probably shows that she was severely depressed and not getting on well with her husband... It was probably the divorce that triggered the mania...

I am not surprised that he did not notice... many men do not know that their partners are suffering PND let alone this type of psychosis. I had a very supportive partner at the time.. I am surprised he stayed as I was very difficult to live with. But he didn't know the depth of my darkest thinking.