"Had this happened in the UK or Ireland, then the pilot would be held strictly liable, without any need or proof of negligence, for the damages to the claimant"
Are you sure? The Shoreham Airshow crash was very different - not performing a standard manoeuvre at an airfield.
Was the Ferris Wheel NOTAM'd?
An English Local Authority erected a marker post in the middle of a private strip, after a pilot took off, and he hit it landing into the low sun on return. The pilot was not criticised
I agree the girl was an innocent victim deserving compensation.
But whoever sanctioned the wheel position should pay. They knew about the airfield.