Nothing is known about Ivonne's life prior to or as the outbreak began, except that she lived in Tijuana, Baja California.
Ivonne walks around La Colonia with a male companion as Reynaldo informs Luciana and Nick that Francisco and his family have fled the settlement. Later, Ivonne is in the infirmary working when Alejandro asks her to tend to Don Berto so he may speak with Luciana and Nick in private. Afterwards, Ivonne attends Alejandro's sermon in the church with the other townspeople.
Despite the residents of La Colonia being gunned down at the border, it is possible Ivonne was one of the many residents to flee the community before they ventured off as she is not seen with the rest of the group.
This list shows the victims Ivonne has killed:
- Possibly numerous counts of zombies
- "Pillar of Salt" (No Lines)
- While this character was not credited, Alejandro refers to her as Ivonne in "Pillar of Salt".