If nobody knew any better I think most people would quickly say SHE is the one pining and can't let go... Her erratic and hostile behaviour is a dead give away dude...

Why is it during the divorce you are calm and she's a raging psychopath?

Maturity to put it simply... I know you say she's getting support, but it clearly isn't any good or she wouldn't be hostile...

Next time she starts raging just put some headphones on...