you know, the car was open, why not close it remotely and you don't have to act like a frightened 13 yr old *******, fem, trans boy to scare it off, there's an app for it.
My general order of assumptions of WTF happened on stuff like this:
1. Drugs and/or alcohol.
2. Stupidity.
3. Onset of severe mental health issue(s).
4. Bacteria/Virus/Aliens/Villains have taken control of her body.
5. The Devil.