I would work with her away from the pasture, away from the other horses first, making sure to get and keep her attention on you. If she's getting in your bubble, she is showing disrespect and you should be able to deal with it better in a smaller area away from the distraction of her buddies. You can redirect her attention by flicking the rope and making her work; you might not need the crop but it would be an extension of your arm. Clinton Anderon, Julie Goodnight, Ken McNabb, and other natural horsemanship trainer have books and videos of how to do this type of ground work. You should get her used to your corrections (and she should get used to what you want from her) away from the other horses. When, and only when, she is super respectful in that location, you can then try it in the pasture to see if the lesson 'sticks' when she's distracted by the others. If she's running over you in the pasture you should go back to the basics again.