Thanks everyone. I can't get the image of her lifeless. I was directly behind her and immediately got off. My darling horse, who has a tendency to not always behave, stopped when asked and stood quietly as her horse ran off bucking. When I got to her, she was breathing, kind of. I talked to her and asked her to please not move (she landed head first, split her Troxel helmet) and I opened her mouth to clear it as it was obvious breathing was abnormal. She then exhaled, gurgling blood, and her eyes fixed, her pupils dilated and I ran around in a circle screaming she's dying,omg she's dying. When I looked at her again, she was grey and that's when our friend got to her and started CPR. It all happened in about 45 seconds.
So I won't go into any more gruesome details and I will try to make something positive come out of this. To answer a question above, we all always wear helmets, and everyone who gets on a horse should . She would be dead if not. Everyone should carry a cell phone. My injured friend had hers and my other friend did too but I didn't. Injured friends cell died on impact. The other friend had a iPhone,only for 2 days, and wasn't sure how to use it. And for those of us who are older, reading glasses need to be carried. My friend with the phone couldn't see it, neither could I but I luckily had used my husbands iPhone a few times and muscle memory got me to where I could dial 9-11. Everyone should take a class in CPR but realize that not everyone is going to be able to do it. When you are panicked, you react differently than you think you will, I know, I did.
I think doing ground work is an excellent suggestion, thanks. I will do that tomorrow and am feeling not so much self-pressure to get back I'm the tack which helps.