Interesting choice of focal point, had you panned with the girl she'd be the subject but as is it's the grafitti behind her. This might not be the angle you're going for, but a schoolish prop (if this wasn't a candid) could tell more of a story...her deciding to study instead of be on the streets.
An interesting image. It is well finessed, sharp in the right places and not overly blurred so as to lose the girl completely. The positioning of the graffiti soda is somewhat funny as it looks like she is about to drink it. I would not however see this image in another place and drop a keywood of decision on it.
She appears distressed in a way, perhaps there *is* a decision on her mind, The body language also lends to that notion but there is not an overt link. I see other things that were most likely unintended as the title does not reflect that thought, but I am inclined on this one as I ponder it to strengthen the lead of the stories that are prompted by that which is mentioned and see a more possible link to the decision. Perhaps she is pondering whether to take a sip of the soda? I know she is not but it crosses my mind. I see inklings of decision and find I have to bump this image as it has finesse and a stronger link than where I had originally placed it. I offer a 5 on this one, perhaps as I ponder more, I will return.
Now - I like the Banksy in the background: a valuable bit of art! Instantly recognisable (though am not sure where this particular one is located).
As for the picture: I like the motion and composition. I am having a tough time finding any pictures that stand by themselves - the decision element in most is imported purely by the title. Am having that difficulty here.