Why not introduce CANTER to Little Britches? I bet there are lots of successes that they could share with each other.
This post even may help parents considering, pondering, does it work/will it help?, introducing their child, to a Horse that they are not Alone.
Your daughter would probably enjoy, reading this CANTER story.
They are also using equine therapy for our wounded warriors. I believe it was Churchill who said “The outside of a horse is good for the inside of a man”. Horses are a great confidence builder for anyone.