I swore I wouldn't start hypothesising based on the very little info we have - but here's a thought. If there was some sort of ploy to get her to walk further up the street, like suggesting someone else was following her, BH (or whoever harmed her) may have said he would accompany her up the street to the police station - I'm not from the area but didn't someone say there was a police station further up the road? But she was attacked before she got there.
Her body language, to me, suggests she was tossing up what to do - I don't get the feeling that she was threatened to do something during the time of the CCTV (with a gun, knife, etc). I feel she was making a decision i.e. to keep walking, to stop, make a call, etc. Like something was a bit off, and she was figuring out what to do next. The fact that she continued on her path says to me she felt it was safer to keep going, than turn back the way she came. For whatever reason.
