negative Traits in game play

I'm currently playing a challenge where the gen 6 heir has to have the 'evil' trait and it's definitely having a marked effect on his relationships with his wife and kids (I have autonomy on full) to the point where he has a bad relationship with his kids as he's always yelling at or nagging them, and his relationship with his wife is way in the red (both friendship and love) - she has embarked on an affair with one of his friends and will divorce him as soon as the gen 7 heir ages up to YA >:) What I really wish would happen (and hasn't so far) is that the wife would get a whim to divorce him - instead of which she keeps getting romantic whims for him, which is bugging me as she no longer loves, or even likes, him :s