OP, you seriously need to find a ground person to teach you in person if your interest is “how to catch this particular mare.” It doesn’t matter how many horses you have caught. The reality is that this mare has you numbered. It isn’t that we don’t want to teach you how. The issue is, the solution is highly dependable on the mare herself, you yourself, and whole slew of other things involved.
For example, if your energy is too high, because you try to “dominate” her, she might decide to dominate you back. If your energy is too low, because you try to be nice, she might decide you are a sissy, and dominate you back. Or your position might not be perfect, and she gave you a finger. All of these will be expressed by her through body languages, many times very subtly if you are not accustomed to detecting them. You need that ground person to point out that signs, and teach you how to respond accordingly. No one method will work with all horses.
Most horses aren’t complicated, and that is why you have never had issues before. But this mare is complicated, for you at least.
Please do not underestimate horses. They are not machines.