She looks like these Asian foreign exchange students I see a lot where I live, like ditzy/dumb, retarded/little girls but intellectually they are brilliant studying neurosurgery or something, but just inept when it comes to social interaction. No attraction to those types, all pale and no womanly features. Agree the video looks like she is waiting for someone, and playing around. But, behavior out of context is often hard to figure, I know if theres footage of me somewhere walking out back exits, or peeking out windows, people would think I'm on drugs or something.
Also, I thought maybe she was hiding from someone, or someone was following her, which may make sense, but then she just goes outside, why not just leave down the hall way for another exit? Waiting in a stalled elevator with the door open couldn't be less safe. I doubt she was trying to stay on camera either, she never looks at, does she? There didn't seem to be much urgency to her actions. More playful and idiotic.