Originally Posted by
endgrainguy
There was a minor crack in the road, parallel to the road, for about 15 feet about 50 feet before her landing spot, but not anything one would think twice about simply riding over.
It seems possible that her wheel got caught in the crack. When that happens, you can no longer balance the bike and you fall over. This can happen very quickly. These cracks can be hard to see and easy to miss.