Jasmine went to Coed y Garreg Primary School. She was a very unhappy, lonely child who was bullied at school and at home. She was deeply loved by her mother Lynn, but her mother's boyfriend Roy disliked her and took every opportunity to be mean to her. Jasmine never knew her father because he left the family when she was just a baby.
Unknown to them, Jasmine was a Chosen One, selected by the Fairies to join them in their immortality. Until she could join them, they protected her. In 2007, they killed Mark Goodson, a paedophile who tried to hurt her, and Roy, who hit her across the face. They also attacked the two school bullies who made her life a misery, but chose to let them live as a warning to others.
Jack Harkness told the Fairies to find another child, but they refused. Eventually, he had to sacrifice Jasmine to the Fairies to save the human race. In a Fairy-like voice, Jasmine thanked Jack and skipped away. Witnessed by her mother and the Torchwood team, she vanished in the glow of her Fairy friends, taken to the "Lost Lands" to become a Fairy herself.