Lieutenant Hall authored seven physics papers on Slipspace communications and was known for maintaining a tidy and prim appearance. Jacob Keyes would later disapprove of her constant smiling and displays of ambition, which usually amounted to attempting to impress him and occasionally showing up colleagues to do so. Hall had blond hair, and she was nearly 6 feet tall.
By 2552, Lieutenant Hall was assigned to the UNSC Iroquois under then-Commander Jacob Keyes. She proved to be a competent operations officer and saw action at the Battle of Sigma Octanus IV. Her performance and morale improved after the victory and she transferred to the recently promoted Captain Keyes' new ship, the UNSC Pillar of Autumn, where she participated in the Fall of Reach and the Battle of Installation 04. Over time, her relationship with Keyes improved; he came to respect her as a valuable part of his bridge crew.
It is unknown what happened to Lieutenant Hall during the Battle of Installation 04. She was never mentioned in Halo: The Flood, so it is assumed she was killed when the Covenant boarded the Pillar of Autumn, or when Ensign Ellen Dowski betrayed Captain Keyes to the Covenant, leading to the execution of the command crew.