I initially thought that maybe she didn't know he was back there. But eyewitness accounts on the TV News are saying she stopped for a brief moment and looked in the mirrors behind her as she was turning around in the median.

SHE KNEW HE WAS BACK THERE BECAUSE PEOPLE YELLED AT HER AND TOLD HER TO STOP BECAUSE SOMEONE WAS STUCK ON HER TRUCK.

She just didn't give a damn.