Very little is known about Jackie's background except that she lived in the Divide, and helped work with safety protocols at the ICBM launch complex before the nuclear missiles destroyed the area. She owned a personal computer that can be found near the wastewater treatment plant on top of an overturned building. Her computer held her personal complaints about loud noises and earthquakes. Judging by her last message she was present either when the bombs fell or when a major earthquake hit.
Jackie is mentioned only in the Fallout: New Vegas add-on Lonesome Road.