Well, the script didn't seem to give her much interiority either, so maybe that was a deliberate choice? I thought, for a little bit, they were trying to play with the idea that as her powers increased, she lost more and more of her humanity--and if they'd taken that somewhere further, they could have done something interesting with it, but instead apparently it just leads to driving the wrong direction down one-way streets while staring blankly at things. :-( Or turning into a sentient computer who apparently becomes God? Which is, I suppose, what the human goal in life is, according to the film?