I will agree with most of the comments here...It's very rare that a photograph\ photographer can wholly capture a sense of realistic emotion...you absolutely nailed it in this shot...I want to walk in and put my arms around this girl and talk for hours about her problems.
this shot is different. Its a cut above the rest of the seemingly sex oriented stuff you tend towards here. Not that i mind those. But this one feels like some thing you can identify with. She feels like some one we know.