Laura Tobin was a human member of Faction Paradox in the 26th century.
Tobin lived on the colony world of Ordifica until it was attacked by the Time Lords, after which she and the rest of the survivors were evacuated and set up on another colony, Anathema. During the time it took for Anathema to travel to Earth through space, Laura Tobin's personality and biodata was copied into a Remembrance Tank, eventually resulting in the being known as Compassion. (PROSE: Interference - Book One)
Laura had a sister, Alison Tobin. (PROSE: Ship of Fools)
She was resurrected in the City of the Saved. (PROSE: Of the City of the Saved...)