Good light (or good post-processing) to bring out your subject. The man in the foreground is a distraction and I would have perhaps preferred this without him in the photograph.
While I am no stickler for the 'rules' of photography, I do think that she is too centered. I like your use of other elements in the image (people), as well as your depth of field to nicely frame and isolate her. Your toning is fairly nice, but I think that the highlights could be a little hotter. Overall, nice image that meets the challenge.
I don’t have much knowledge on street photography but my thoughts on you shot are as follows: I like this shot as it shows how absorbed we get in our own affairs even when in pbulic. I love the expression on her face (wonder what she is talking about?). 10
I love the look of stress on her face. Very nice. Maybe if the background was OOF as well I'd vote a 10....something's not working for me...but I can't put my finger on it...I give it an (8)
I dont know if I'm seeing right but it looks to me that there is a funny cut around the top left subject (looks like a black back pack) ... everything around is blur but the very sharp cut line... other than that, I wonder how you got the light only on the main subject (the lady with the phone)... JMHO