The terror induced by her expression is only increased by how arousing she is. Being attracted by the perfect way she's holding her breasts just makes the silent, un-ending scream captured by the photograph that much more frightening... I'm disturbed by this photo in a way that not many things can disturb me.
I can just see this photo jumping out at you in one of those internet jokes where ya stare at the picture for a really long time to see what's wrong with it just before the scary picture jumps out with the screaming. Fantastic photo!