Your horse has no respect for you. She doesn't hate you, she thinks you are an inferior being who needs dominating.
When you are "asking" her to move over? You need to be TELLING her, and not taking any guff for it.
CA, PP, or the Man in the Moon methods? Doesn't matter who you model after, provided you get the respect that you need from any horse.
I am assuming you are young? And new to horses too. Do you have a little brother, or irritating cousin? That is the attitude you need here. That this horse is that person, and you will not tolerate them messing with your stuff, as it were.
You need to make sure your body language is not telegraphing "I am a loser" but instead is confident and full of energy.
When she pins her ears at you, or displays annoyance, you need to correct her hard then. Keep your senses alert for her displays of temper, and toughen your voice up and "growl" at her, take her halter cheekpiece and give it a slight shake, and tell her to "knock it off."
Continuing to let her display traits that show she is your boss, will lead to worse behavior.
You also need to be aware of your stance when feeding her, if she is getting grained/hayed in paddock or pasture. MAKE her move away from food, and if she pins ears/bucks/shakes head, make her move far away, and don't let her come back in until you decide she can. Take a long branch with leaves/smaller branches and shake it low, do not swat at her, or hit her. Keep her eyes focused on the swishing branch, and make her back off from it, or move away from it.
No yelling, or even talking other than a firm BACK, and move towards her. Once you have gotten her past the "I am your BOSS" to "Oops, she is MY boss", and you can tell that, or should be able to, by her eyes/ears/general demeanor, then and only then can you let her approach feed. Walk toward feed, let her follow at a far distance. Every so often, turn and make her back away.
And if you are messing or working with her without having her haltered and on lead rope? Quit it. That type of thing makes a horse think it is calling the shots. Without a lead on horse? It is moving when it wants to rather than when you want to, and every time horses moves away from you, or pulls away from you when not haltered? That reinforces in the horse's mind that it is the leader, not you.
With some horses, this would never be an issue, but with tougher minded horses, or ones more inclined to be a witch on wheels? That will lead to problems too.
Horses make me a better person.