Whats the name of this movie? ITS KILLING ME?

Whats the name of that movie where theres a girl, she grows up in a snowy town, she's kidnapped by America and then she pretends to cry and then kills the lady? She ends up killing a lot of people... they're calling this movie modern-day Salt... I know its a one-word title I just cant for the life of me remember the name. PLEASE HELP!