Lucy Fletcher nee Lombard was a reporter for the Daily Chronicle. She lived in New York with partner and nanny Grant Gordon, and daughter Jennifer Fletcher. (TV: The Return of Doctor Mysterio)
Lucy and Grant got married.
Eight years after the Harmony Shoal incident, the Twelfth Doctor returned to Lucy's life asking to take Grant on a quest through time and space looking for the three siblings of the crystal which gave Grant his powers. Grant refused to go unless he could bring Lucy and Jennifer with him.
The first location visited in this quest was a post-apocalyptic version of New York City. (COMIC: Ghost Stories)