I've no horse in the game, I am just trying to understand the layout a bit better. She was hit in the left hand lane. In looking at the stretch of road on Google maps, the highway is 4 lanes with a median in the center so she crossed a white line and was hit from behind.
This is the stretch of the road from the ironman map of the course. From Delaware State Park up to where route 98 veers off.
https://www.google.com/maps/place/Co...605492,13.25z/
My assumption would be that they blocked off the rightmost lane of the 2 lanes heading North.