as one that was arrested for disrupting a hunt many years ago, I would never have grabbed at the horse's reins, anyone who does so is not aware of the damage a spooked horse can cause, and the damage it would also do to the horse's mouth. They were not fox hunting either but trailing I think it is called. Had the sab had a bit more savvy then none of this would have happened. Badly organised by the sabs who assumed wrongly it was a hunt. I don't think either party is likey to be charged as there was fault on both sides for the ensuing meleé. I think she used what would considered reasonable force to try and get him to release her mount although charging was not really clever