Not much is known about Kathy's life before the apocalypse except that she may have lived in or around the Washington D.C. area before the outbreak.
Kathy is first shown when Tara is being held in a cabin, Beatrice questions her with Natania and Kathy. That night, the women have supper and attempt to persuade Tara to stay with them in Oceanside. However, Tara wants to go back home to her girlfriend and the womens offer to escort Tara back to the bridge where she last saw Heath.
While in the woods, Tara catches on to the real plan: Kathy and Beatrice are going to kill her and manages to flee from them, but Beatrice finds Tara and the women scuffle. With her rifle aimed at Tara, she is knocked out by Cyndie. A short time later, Beatrice and Kathy arrive at the bridge and bring Cyndie back home after Tara successfully escapes.
Kathy appears when bombs begin to go off in the outskirts of Oceanside, as she is running she is stopped by Daryl, as is told to put her hands behind her head. She obeys him and is brought to the woods with the other Oceanside residents.
When Natania and Cyndie talk about fighting the Saviors, Kathy seems somewhat interested, however it is unknown if she was willing to join the fight. Shortly after, she is among the survivors to help defend the Oceanside residents from walkers.
After the deal is over, Kathy watches as the Alexandrians take their guns.
This list shows the victims Kathy has killed:
- Numerous counts of zombies and unnamed people.