i had the same concept and i did similar in alone but i feel for the abandoned theme. for me it needs a little more grunge, dirty socks etc not so clean and crisp on her clothing, not a massive fan of the vinette either.
great focus here on the little girl. the enveloping shadows are a nice touch to the overall feel here. positioning is spot-on, i expect this to place well.
The reason I didn't vote higher on this photo is because it looked like you just tried to make a story from a child that was handy rather than really going out and finding something abandoned. If the child had looked more abandoned in a more rustic abandoned type setting I could have gone for it. Not a bad photo but this is a themed challenge.