She might be going through the baby blues (I went through that with my first baby) so don't get angry with her that is the last thing you want to do. (babycenter.com)
Some of them were worried about saying something silly, because their parents got angry with them when they did. (home-ed.info)
Most of the kids then got angry with their older brother and proceeded to trash the place. (religion.blogs.cnn.com)