Nothing is known about Kathy's life prior to or as the outbreak began, except that she had a husband, Vernon, and two kids, Mike and Gretchen.
Kathy and her family decided to flee Broke Jaw Ranch after her son and the other militia returned bloodied and bruised after their encounter with Walker. She feared for her safety if she remained on the ranch and left the day after the nighttime bonfires were lit around the ranch by Walker's people as a warning. While on the road with her family, they are stopped by Troy and after an altercation gone wrong, ended up shot and killed by Troy, eventually reanimating. She is then put down by Jeremiah when the ambushed caravan is discovered.
Troy caught up with the RV and attempted to talk to Mike. The situation escalated and Troy ended up killing the entire Trimbol family, including Kathy. She is later put down by Jeremiah.
- "Red Dirt" (No Lines)