OK, time to get the old flame suit on here, because I probably aren't going to make any friends with this comment.
The "<insert appropriate profanity here> you, I'll do what I want" attitude isn't going to help anyone. Politely arguing the point, yes. Coming back later when the manager says its OK, yes, but giving the lady the theoretic bird and doing what you want is just bad news. Someone suggested above that she was a high up part of the society that runs the place? Lets look at it this way. She argues, you do as you please, she gets angry, you still do as you please...so what happens next? She brings it up at the next society meeting and they make it a condition of entry that there is no photography on site...who wins?