Jockey Lorna Brooke died ten days after a fall in an amateur race when her horse jumped too low, an inquest heard.
Orchestrated, trained by her mother Lady Susan Brooke, came down at the third fence of a handicap chase at Taunton.
The accident, on April 8 this year, seriously injured 37-year-old Brooke, a competitor in more than 400 races.
Dr Jason Louis said she was not moving but fully conscious, having been thrown to the left by the impact.
Medics gave assistance and an air ambulance was called to take her to Southmead Hospital in Bristol.
Brooke was treated for a spinal injury, however, she later suffered hypoxic brain injury, multiple organ failure and died ten days later.
Assistant coroner Timothy Hayden recorded a verdict of accidental death at the inquest in Somerset.
From Llandrindod Wells, Powys, Brooke rode 17 winners in Britain and Ireland, including the inaugural running of a ladies handicap chase at Fairyhouse in 2015.
The British Horseracing Authority's chief executive Julie Harrington said all at the organisation were 'deeply saddened' by the loss of the talented member of the weighing room.
In May, family and friends turned out to remember Brooke at a special memorial event at Ludlow Racecourse.
A spokesman for the family said that her parents, Sir Alistair and Lady Susan Brooke, were thankful for everyone's support.
"Lorna was fun, she was bubbly and above all she was herself with no airs and graces," he added.
"Always smiling, always pleased to see you. And behind that smile was a determined steely competitor with great ability."
Four of Brooke's friends recently took part in a 516-mile cycling challenge for charities the Injured Jockeys Fund and Retraining of Racehorses.
Kate Jones, Tabitha Worsley, Rachel Bradbury with Meg Thomas raised more than £20,000 – double their initial target.
