From bits of info she was a crew member of a nostalgic racer so she might of been down track pit area---

A loose rear tire off a fuel car has a lot of energy and will go miles---we broke an axle end off our funnycar (before full floaters) and it hit a steel electrical pole/tower down track and bent it doubled

Most parts go downtrack at the drags and will be impossible to cage/fence so nothing can get into spectator areas--the most vulnerble areas are downtrack side pit areas or return roads