It probably was chaotic ... so chaotic that they told her to move her car (her screaming was probably putting a damper on business, doncha know ... :-) ...).
Can you imagine someone being in a medical emergency in their car, on the street and then being told by the police or paramedics to move their car before they treat her medically! ... LOL ...
From what I’ve seen everywhere I’ve ever come upon it in public, is that the patient is always left “in place” until paramedics arrive and then they determine how to move the patient.
Chen's buddy was right there in the car....right there...and she called 911.
People are left in place only where they can't move on their own. Chen was not immobilized....
Please notice that there is absolutely no mention of any rescue arriving and transporting etc etc and we have not heard the 911 tape. Wait and see.