Why are you so righteously indignant about this? Was this a date that you missed, or did you fail to provide appropriate ID someplace, and this video rattled your cage?
Also, if she had been willing to wait, the situation might have been resolved, but, because she really wasn't there as a guest, but as a free-loader who was imposing on a friend to get her in free(at who knows what peril to their job?), she opted not to wait for approval. They didn't throw her out, she left.