trying to picture someone assaulting or kidnapping her, where her car becomes involved and she (or her body) ends up inside it, but preferably isn't super high risk, attention-grabbing behavior...
i think one of these seems likely:
- someone assaults her as she's getting into the car. if conspicuously, the perp then gets them both out of there quickly.
- someone assaults her on her way to her car, without being too conspicuous. e.g., pulls a gun and says "shut up and get in the car".
- the initial encounter and maybe also entering the car together was voluntary. believable if it's someone she knew. then things turned bad later. planned or not.
what doesn't seem likely to me:
- someone assaults her outside her apartment, conspicuously and for an extended period of time
- someone assaults her inside her apartment and then moves her or her body to her car
- someone assaults her in or near her apartment, disposes of her body on site, and then moves her car for some reason