This actress was still one year away from her big break when she appeared on TNG as Hedril, a telepathic youngster who triggers repressed memories and a psychotic break in the usually comic Lwaxana Troi. She won the Best Actress Award at Cannes for playing a morose bride getting married on the eve of Earth's destruction in Lars von Trier's Melancholia. Identify this actress who is currently starring in the TV series Fargo.
Kirsten Dunst