I'm not sure I like the expression on her face. With those big brown eyes I think I might have tried this shot again to try to get a happier and more innocent expression.
What a sweet smile! :-) I like how her facing downward and looking up makes the whites of her eyes match her smile. I also like the blurring, which I think is effective.
I think the shot would have looked better without the hair on her left side, the candle should have been a little more in focus (but I believe thats limited with the available depth of field).