Interesting that the ski resort doesn’t see it your way.
I wonder if they know something that you don’t.
After reading the other posts, I see that the girl was in a ski class.
If the ski resort did take action against the girl, then she and her parents could make the case that the ski class was being taught improperly ( skiers skiing too close together, too fast) or that the girl had been placed in a class that was beyond her ability.