Vickers is hiding.

Yeah that whole "naked push-ups" thing was kind of a joke from Damon Lindelof and Charlize Theron. But yeah you're right she looks like she's hiding or crawling somewhere with a very angry expression. Oh and she's not even naked anyway she's got a 'boob tube' thing on.

Never thought of it like that, but I think you might be right!

I'd go with the push ups. Here description of herself in the interview casts her as a fairly driven company woman. Push-ups are a daily routine for her. Also she does not look scared.

Oh, I don't think that push-ups are a daily routine for her. I think the decription in the interview was a joke about doing push-ups. Probably from doing that scene, going up and down to hide. It looks like she is in a place that she does not want to be.