Every werewolf in Rosa's family has an ability. Her grandmother has healing, her grandfather has time travel and her mother had healing. Notice I used the word "had". When Rosa was little her mother was murdered in front of Rosa's very eyes. And ever since she hasn't spoken a word. Instead of being blessed with the power of telekinesis like her twin brother, as planed, she has something much more powerful. She knows the answer to everything. She knows what every action will lead to, every single detail about every person and what is supposed to happen in the future. In other words, she knows the meaning of life. And the only living person in the world who knows of her power is her twin, Xavier.