i met her with my friend who was a big big fan of hers and she had always wanted to meet her, she managed to get a photo with her and in the photo shes turned her head to look at the press etc.
then i took one with her and someones arm got in the way so i asked for another and she said no i have to have photos for the press now!
So basically, you'd already taken two photos with her. And you still complained when she said she had to leave? At the end of the day, you can't expect someone to happily stand around being photographed by (or with) you until the photos are to your satisfaction.
I think there's a world of difference between someone being nasty and someone upsetting you because they didn't hang around for as long as you wanted them to.