I am sorry but I feel as if I am banging my head on a brick wall.
If it takes three corrections to get results then you are nagging.
You correct once and this bed not be with a whip, slap or punch it can be with a shake of the halter rope, a word or a pike with the finger.
Two things count more than anything, the first is timing and the second the belief that you are in charge. very, very rarely does a novice have the instinct to get this correct.
I agree with enh about getting th horse trained for you. Mares are often far less forgiving than geldings or even some stallions.
When I said 3 corrections, I mean on 3 different occurances, not at once over one situation.
SHaking the halter, a word or a pike with the finger wont do anything for her. Thats way too light. It may on some horses but not her.
I know what gets her immediate attention and that is a smack on the muzzle, belly or hind. Trust me, I started off with the light stuff but the more you do stuff that is ineffective, the more they will want to carry on and test you. This is what my trainers and people have been telling me, be more assertive (which I have) and until you are hard on your horse, you wont be able to set them straight.
That is why when I roundpenned her for the very first time over 2 months ago I saw a night and day difference in her. Even the trainers said it.
One of the worst habits she had with me was turning her butt to me everyday, often many times a day. Once I roundpenned her and started working her feet, she was a much different horse.
From what I was told my timing from when she does something to when I correct is really good. Obviously its something that im always looking to improve on but I have a good jist of the timing. Im quick and firm and I always try to anticapate because I know if you catch them right as they are about to do it, it catches them by surprise.
I was far too gentle with her from the start and I couldnt even back her up at all. Hell even trainers had trouble keeping her out of their space. I couldnt move her feet at all. But now that im a lot more assertive, she responds to lightest ques and I can move her feet quite easily. I have made great progress in this just from simply being more assertive.