In the movie "X-Men Origin of wolverine" who is the black girl with freezing powers?

In this movie, this girl stands behind cyclops when he tells emma to "go left", and emma replies "you cant see". There is a black girl behind him, if you look carefully. She also stands behind him again when he has a telepathic talk with proffesser X outside. I think she is the one with the freezing powers, but the actor looks so familure. Does anyone know who she is?