If she had her purse (iirc it was said she took her belongings when she left), then she meant to be gone, unless heading for a rest room break and went out to get something from her car. Maybe told someone needed her help, maybe some other reason, but you don't carry all your belongings (normally, unless there was no place to lock it up) to just run to your car or run to get something from someone, etc, imo.Yes, I think LE knew from the very start.
Still, I wonder if he lured her out or did she leave the building for some reason and he was laying in wait? Did he follow her to work?
jmopinion
I have the feeling King contacted her and whatever he said (coercion, threat to family, threat to car, something else sounding urgent but not threatening if not on bad terms at the time) made her rush out, meaning to leave. That leaves getting grabbed on the way to the car as a good possibility.
I am just so angry this happened to yet another young person.