when she said it was her holocaust class and she was fidgeting with her eye = i'm lying body language. And if the dude is shooting an AR15, i'm pretty sure holding up a textbook wouldnt stop one. in fact some guy did a youtube video and it took 2 or 3 huuuge thick textbooks in a backpack to stop an AR15 round from about 10 feet. She is probably the better actor out of any of the kids though, she fakes the emotion better.