Thank you, Prinella. The past three days I have been working her in and out of the corner, popping her on the nose when she came at me, she has even showed signs of submissiveness. She even STOOD in the corner! The second time she tried to jump out and I popped her with the whip until she stopped. I've just been working the daylights out of her in the run and in the middle of the barn and she gets to rest in the corner.
Thanks for all the helpful advice all of you have given, feel free to keep giving it.