Three years ago, Amelia was capured by Aster Corps, who used her to help their stocks. Meanwhile Calvin used her to help his retarded brother. Jake led Lucy to Calvin, where she tried to get Amelia back. However, Calvin's mother was found dead, and Amelia was gone.
At season 2 finale "Leviathan" Amelia states that she can no longer see probabilities, insinuating that she cannot see patterns anymore and is no longer one of the 36