You've been surviving the zombie infection for the last 3 weeks, and the whole world's gone to hell. The group you started with had all been killed off, and now you're left alone in a safe-room. After ruminating on the idea of putting your gun to your head and pulling the trigger, you decided to die by combat instead. Or somehow survive, in some distant flare of hope. So, you pull up the pipe, and walk through, gun trained in front of you. Just as you prepare to execute the first zombie you see, she looks up at your flashlight from previously vomiting blood and says.
"Oh, hey --gag--. Don't worry about me, it's just --heave-- the flu. --Deep breaths, ventilating-- In fact, I'm feeling much better, I shouldn't be contagious.... It's been --cough-- two weeks."
She seems a bit dazed and confused, but not hostile. What should you even do?