I can't see it, unless she knew the person and did not scream...Holly Bobo apparently got a scream off at some point, alerting a neighbot (not that it helped her...) and that was in the morning. At midnight or after, a scream should have attracted lots of attention, not to mention some sign of a struggle, even if just in the grass, or something dropped, a car pulling away in a hurry...if someone walked up and grabbed her, as you say, wouldn't they have to pull, carry, drag her back past those units to get to a car? Or the other way, still winding up with her out in the street?