Perhaps there is someone to who you can work with locally, to start you off if you are not familiar with the whys and hows. I've personally never used any electronic devises, so I have no experience in that sort of thing, but we've always been able to curb rambunctious behavior with work. Otherwise, I think you are doing the right thing in not rewarding the behaviour. She thinks it's all a game, and tries to get attention that way. I think if she had a little work to do, and that was her attention, then this behaviour would improve.
Horses are large and occasionally unpredictable and dangerous animals.
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