Did she have an uncredited role in 'Jawbreakers'?

I just watched the movie Jawbreakers. In the ending prom scene, there is a redhead wearing a rose-pink dress in the front row on the left side of the screen, looking shocked during Courtney's (Rose McGowan) speech being interrupted by her recorded confession of killing the school's sweetheart, Liz (Charlotte Ayana). During the corsage-throwing scene, that same redhead is seen throwing a corsage and saying, "You hear me...you are dead!"

It looks a lot like Mireille, and she would have been about the right age for that movie. I also thought it might have been Jessica Chastain, but Jessica has a cleft chin; the girl in the movie did not, and neither does Mireille.

Can anyone confirm this? Or maybe it's another uncredited redhead?