A gang rape of 11 men of a woman took only half an hour? It does sound like a very lurid rape fantasy. I'm no expert on these matters but I imagine an organised gang rape would not take place in a car park.
6 March was a Sunday and Bluewater closes at 1700 on a Sunday.
What was this woman doing on her own in a car park between 1930 to 2000?
Was her car parked there?
If so, what was it doing there two and a half hours after Bluewater closed?
If she didn't have a car there, why was she still in Bluewater two and half hours after Bluewater closed?
Was she wandering around the car park hoping to make a false rape allegation?