I have it on a good authority! that she shied at a field mouse! Good to know the the running rail collapsed as it was meant to! Back in mid 80's (@Wario?) I recall a young rider going through a metal rail, near where it was cemented into the ground! The racecourse D got me to take a photo of her smashed Helmut! She never rode again.
ps. I found it more interesting how the TAB paid out on her! A second before she crashed I had sighed a serious Bugger! She had been 10 cents under what I needed her to be paying! the strange life of the horse punter!