She probably isn't pissed about the comments of the movie, she is probably mad because of something completely different. Girls will be steaming about something and then use anything that rubs them the wrong way to light off.
Oh, and if you care to make up with her, don't ask "What's wrong?" ...ask "How do you feel?"
Just a little tip.... "What's wrong?" takes you full circle, "How do you feel?" seems to get you out of the hole quicker.
Hope that helps.