Zombie torture for the traitor, leaving her for days. The heat of the day and coldness of the night is enough to make anyone insane, but that is the easy part... She will also be used as zombie bait so they can be captured, but for that to work she will be raped continuously until more comes or until she dies.
Extremely disgusting and fucked up. Why does she have those veins/arteries so visible? That's not attractive at all, regardless of the story, which is awful anyway.