The backstory on the horse is interesting.
When I first saw the CDJ video, two things struck me. First CDJ wasn’t wearing boots, which suggest she had no intention of getting in the horse. Which is fine of course (self preservation is a good thing!), but perhaps dealing with this horse needed quicker timing and a braver rider. Second, why the double bridle if the issue was a severely stuck horse?
The fb vid shows her in a snaffle still showing the same tendency, but a stuck horse with a rearing history in a double is just asking for it IMO. I would also submit that a few seconds of video are never really sufficient to understand what’s going on with a horse, veterinary or otherwise.
I wonder if this horse is a good jumper? Maybe she just needs a new job. Nothing wrong with that.