One of my favourite cosplay photos I've come across. Getting the costume correct is only a small part of the task of the cosplayer/photographer team to me. There's also things to consider such as "Would the character be seen in this environment?", "Does the cosplayer's expression represent the character's personality?", and "Does the cosplayer bother to think outside the box and use in-character props that aren't part of the immediate costume?" You tick off everything here.
My only critique would be that with the prop, the natural backdrop would ideally be a wall with lines painted across it, or at least just a plain white wall (a typical environment to have your mug-shot taken). Other than that, I mean it still looks like a city environment, she could have easily just stolen the damned sign. It's just my interpretation XD