It is my belief that a person's behaviour at their lowest point is frequently more indicative of their true nature than their behaviour at their highest point. Diana showed her true nature here, and it is fucking impressive.
Also, because it must be said: good GODS this artwork is gorgeous. Diana's a little too skinny for me, and I prefer her with curly hair, but she actually looks Greek. That is far too rare an occurance for me to not remark on it.