Activists Simon Medhurst and Shirley Makin accused Mrs Goring of assaulting them in a private prosecution after Sussex Police decided to take no action against her last year.
She denied beating the pair and was due to appear before magistrates in January this year.
Her husband Richard Goring, 80, whose family founded the UK’s oldest hotel dynasty, has defended her actions, describing the saboteurs as “terrorists”.
He attended his late wife’s inquest at Woking Coroners’ Court on Wednesday, where coroner Simon Wickens concluded that her death was an accident.
James Etheridge, who was on the draghunt with Ms Goring when she died, said: “She was standing holding her horse’s reins when the horse reared and appeared to be stuck on barbed wire.
“She was trying to keep hold of the horse but that’s when it fell backwards on top of her and she struggled to breathe.”
PC Robert Lawrence, who attended the scene, said: “On November 6 2018 police arrived as ambulance were leaving. Jane had suffered a massive trauma to the back of her head along with crush injuries.
“The head specialist team arrived and they tried to resuscitate but she was confirmed dead at the scene.”