Tie her up and leave her for a couple of hours. Don't chat with her, or talk to her, or even stay in sight.
She is continuing to do this more than likely because it has not been long enough for her to get over herself.
She could stand quietly if the lead mare told her to, guarantee it. They would not put up with it in herd situation, and neither should you.
Our horses stand hard tied for hours, if need be. They got that way by being left tied, and ignored.