The comments out there are terrible. For all we know the poor girl was being led on her saint of a veteran pony who tripped on a stone. It only takes an awkward landing to be hurt badly.
RIP little one and thoughts to her parents.
Sussexbythesea - I completely agree. So sorry for your friend.
ycbm - the story is local to me and therefore of interest. I've seen firsthand someone doing exactly the same, charging people for livery and then starving the horses to literally skin and bone. How anyone can do such a thing is...