Tu Hui Jia
Now call me dense, but I was pretty sure that the girl at the beginning of the movie was Tu Hui Jia (Carrie.) - during their childhood flashback that is. However, when I was watching the movie, I didn't hear introduce herself. So was that her? Because the foreshadowing in the future would make sense.
And IF it was her, why doesn't she ever mention, "HEY, I was the kid you decided to cut her hair off." -___- (obviously not like that...but you get what I mean)