- You may be looking for the short story.
When Lucy was twelve, she and her family moved from London to Ogmore-by-Sea. There Lucy became friends with Hobo, a local boy who had alopecia. The two of them travelled to London to an event celebrating the life of Alistair Gordon Lethbridge-Stewart. The event was a trap by the Great Intelligence, and Lucy was able to defeat the entity with the help of Hobo and Dame Anne Bishop. (PROSE: Avatars of the Intelligence)
Lucy and Hobo travelled to Monknash to investigate the strange behaviour of its inhabitants. They discovered the behaviour was caused by the influence of Cylene, an alien matriarch. After stopping Cylene's sister, Sorene, from stranding her on the planet, Cylene was able to return home. (PROSE: The Midnight People)
Lucy and Hobo went to a video game arcade in Porthcawl. There they encountered a Quark. Lucy managed to pacify it as she was a descendant of its former master, Alistair Lethbridge-Stewart. (PROSE: The Arcade of Doom)
According to one account, Hobo and Lucy eventually ended up as the last two rebellious survivors of humanity in a ruined London at "the end of the world", who were being hunted by the government while the Sun slowly imploded overhead. (PROSE: Assessment Day)
Lucy had dark skin and dark eyes, taking after her mother, Tamara. (PROSE: Lucy Wilson) She had wild hair. The personification of her grandfather told her that she had "the eyes" of a Lethbridge-Stewart, eyes that had seen wonders that others hadn't. (PROSE: Curse of the Mirror Clowns)
Lucy had a keen interest in aliens throughout her childhood, relishing in her grandfather's stories. Alistair himself believed she had spirit, much more so than any of his other descendants. (PROSE: Lucy Wilson) Lucy later adopted the alias "Lucy Lethbridge-Stewart", acknowledging her heritage and her mantle as a defender of Earth. (PROSE: Curse of the Mirror Clowns)