From 1854 to her death, Churchill served as a Lady of the Bedchamber to Victoria; this made her the longest serving member of the queen's personal household. Her role mainly extended to accompanying the queen on her travels and acting as her intermediary in the royal household. Despite her long service, little is known of the details of Lady Churchill's personal life and time serving the queen, for she left no journals or memoirs. Her marriage to Francis Spencer, 2nd Baron Churchill produced one son.