Nothing is known about Sara's life except that she had a father named Elías, a mother named Angelica, and had a brother named Benito. Her and her family lived on a farm in rural Baja California, approximately southeast of the city of Tijuana. She was also born in 2003.
As the outbreak wrecked havoc in Baja California, Sara, her brother and mother were killed. She was buried on the farm along with her brother and mother.
As Travis searches her house for her husband's name, several photographs of her and her family can briefly be seen on the wall of the living room.
Sara was killed in the early stages of the apocalypse. It is assumed that she was put down by his father as he buried her on their farm.