And this is why the usual advice is "If you have to draw a weapon, call the cops soon as possible."
Harvey took pictures from her car of Ra holding the gun, and eventually
drove to a police station where she reported the incident. Ra reported
the incident three hours later. Because
Harvey filed her report first, Detroit police treated her as the victim,
per department policy. Harvey was never charged for driving her vehicle
God knows how it would have affected this mess had Ra called first, but it couldn't have hurt. Of course, she probably didn't think someone who'd done what Harvey did would call the cops...