I'm sure that a smoker - or an ex-smoker - and a non-smoker cannot see this image the same way. This moment, where the cigarette is already between the fingers but not yet lit up, and a lighter ready is pure happiness. Some of this moment that the smoker would see as stretched in time. That gives her peace of mind, and a such self confidence that she can enjoy browsing around.
I really like how the finger and the cigarette are aligned. I also like this tight crop. A powerful image!
I wonder what she's thinking, what notes she's going to make while she takes time out. There's something occupying her attention. Everything in the shot points out to the right, but I think she's looking beyond whatever's over there, and on into her own space. The complete absence of any background context just strengthens this impression. A strong shot.