I didn't realize that I had found her the first time. I just went up to check on some chick that had hung herself and suddenly she was alive but with no nametag so I just figured it was another survivor and went ahead and cleared every other area with no result.
So finally I thought "Oh, maybe I already found her then", while only having 1 hour left and being one square away from the starting area. Upon traveling there I got nuked.
well it is one amazing game