I'm glad that you stuck through it, and did what you did knowing it could come to this. Honestly I have to agree with everyone else, good riddance to her. She is so **ll bent on getting to the top that she's not looking out for anyones safety, her's, the horse's, or anyone else who might be involved. She is full of herself, and hopefully someday will climb down off of her high horse, and realize that life isn't all about one upping your friends, or getting to the top no matter what it takes. I would see what other horse people are around the barn that are your age, and befriend them, and start to go out on ride with them. I would just take a breath, and remember that you did all you could, you managed to keep her from getting this horse, and helped her parents see the light, and now its out of your hands. If she doesn't want to listen, then well there's nothing left you can do. You are a great friend even if she doesn't want to admit it.