Nothing is known about McElroy's life prior to the outbreak, except that she served as a member of the California Army National Guard.
Private McElroy is among the National Guardsmen deployed to Safe Zone India within Los Angeles. She and her squadron, led by Lieutenant Moyers, arrive in the neighborhood of El Sereno and start conducting searches at each house for survivors and bodies in an attempt to secure the area.
Private McElroy drives a Hummer through the streets of El Sereno while working an assignment. Later, she is helping hand out water and other provisions as Lieutenant Moyers addresses the crowd with news updates regarding the safe and dead zones.
Private McElroy is having a status with Lieutenant Moyers by the front gate when Travis Manawa interrupts, asking for an update regarding the neighbors who were taken away by the guardsmen, including Nick and Griselda.
Following the zombie invasion at the military base, McElroy's fate is unknown. It is unclear whether she was able to escape the military base or if she was one of the many casualties of the zombie attack.
This list shows the victims McElroy has killed:
- Possibly numerous counts of zombies and unnamed people
- The actress was busy on the day of filming for "The Good Man", but confirmed that her character would have been at the base during the events of the episode.