From Halopedia, the Halo wiki
Lindsay Morgan Lockhart was formerly a Narrative Designer at 343 Industries. Before joining Microsoft Studios in 2012, she worked at Sigil Games Online, Sony Online Entertainment (now Daybreak Game Company), Ohai, and Trion Worlds, having helped to develop the games Everquest II and Rift. At 343 Industries, she helped to launch Halo 4 and to develop Halo 5: Guardians. In Halo 5: Guardians, she is known to have written portions of the background narrative in the levels set on Meridian, such as audio logs and voice overs. She expanded this narrative, especially the character Evelyn Collins, in "What Remains", the short story she contributed to Halo: Fractures. In November 2016, she left 343 Industries to work as a freelance writer and narrative designer at Bear Tree Studios.