It is safe to say that both are at fault here the forklift operator for not having his forks on the ground while the lift was parked where as the girl would have ran over them on her little motor scooter which at the speed she was traveling would have launched like the General Lee jumping a bridge with its short wheel base by the time the front wheel had left the ground the rear wheel would have struct the fork with all of the weight firmly planted on the rear wheel it would have bucked with the force of the hind legs of a 3 year old bronc driving the front end back to the ground just beyond the 2nd fork she would have been fighting the handle bars and by this time the rear wheel would have hit the second fork bucking once again only now the front wheel would have been skidding sideways since she would have lost any control that she may have once thought she had the scooter and the girl would wind up in a twisted pile of metal plastic and female flesh but probably not sustaining near as severe an injury as striking face chin or neck first on a solid steel bar.
had the forklift operator seen the girl approaching in time all he would have had to do would to have raised the forks a few more inches and she would have sailed right under never knowing she was in danger.
The girl obviously had no awareness of where she was riding and probably didn't even notice there was a forklift sitting near her path of travel or she would have ridden around to the rear of it. Or maybe she did see it and did not correlate that such a machine has long protrusions sticking out in front of it which may or may not be on the ground or if raised not be high enough to ride under.
People drive into and under things like the backs of Semi trailers every day and never even know they are about to do so.