ok, I realize that a little time has passed, but along with the dental problems she possibly has it sounds like she does not respect you like she should, that you are not her herd boss, and it can be dangerous. if you establish yourself as top horse she will do just about anything you ask of her unless it causes her pain. She should respect your space when you try to feed her as if she doesn't she will run you over ar smush you into a wall!