 Because she can't bring herself to bring the tears because it's not real. Now, if you're really upset, you watch any bad acting, and you're blubbering, blubbering, blubbering, except there's no blubber, right? There's no waterworks. There's no snot. There's nothing. I can get the waterworks going if I need to. A real actor uses things from their real life. If you haven't had sad stuff in your life, you've been lucky. If you can't recall it, you're a robot.