Seconds later, she appears next to the window with a gas mask, holding a nozzle with which she sprays the occupants of the car with what is apparently a knockout gas, causing them to become unconscious.
She appears next to the window with a gas mask. This is seconds later. She was holding a nozzle with which she sprays the occupants of the car with what is apparently a knockout gas. This was seconds later. She was causing them to become unconscious. This was seconds later.