This is subtle body language which we as humans cannot control (
unless you are highly trained expert in body language which is not very likely), as body language signals are controlled by the subconsciousness.
So we are most of the time not even aware that we are doing this. It is almost impossible to do this and control it. This is why CIA,FBA, MI6, Mossad etc. etc. doesn't give crap what you say when interrogate people, they pay close attention to your body language.
So that assumption that is not genuine I must point out that you are highly like wrong in that.
Add on top of that that a bimbo like her probably cannot chew a bubble gum and walk on the same time then... ha ha lmfao.