It boggles my mind. Maybe the door was unlocked.
Why she didn’t jump out is beyond me. Perhaps he had a gun he had illegally-obtained?
I can’t imagine any other reason she didn’t jump out of the van and run into Walgreens. Or he talked her into giving him a “ride” somewhere.
You are probably correct. He had a gun, followed her to the vehicle and forced her to move to the passenger seat.
She should have never acknowledged him nor spoken to him in Walgreens. Some women can not pick up the clues about guys who are overly friendly.