looks setup, no one when hit with a water or air like that would throw their head and arms back like that. The normal defensive instinct in most people is to duck your head and put your arms in front of your head or body for protection. Most women also would be angry as fuck if that was done to them without any kind of prior knowledge or warning. Also she was in no hurry to cover herself again most women would of pulled the shirt up rather quickly or even catch it as it went down, not just throw their head and arms back for a second or two then cover her boobs with her hands.