Then why constantly try trigger me into a argument?
To see if an emotional attachment is still in place, any emotional reaction will confirm it, and anger can be easier to trigger than other emotions.
She might as well try to argue with an ice cube... .
... I've done this for too long and hence the cold state.
Just not my place anymore...
Nice! A cold, unemotional state is the best tack if you want to detach from her. Is that a state you can go to when you need to, and because you're used to it Bushido, or do you honestly feel that way full time?