I used to work at the New Am, and while I never saw Olive myself, I do remember Dana telling me about her, and I have a pretty good idea of the identity of the watchman who spotted her! The story of his sighting spread through the theater like wildfire. :)
I believe it was the same watchman who once took a co-worker and me on a little excursion up to the abandoned roof area. It was dark, quiet, cobwebby, dusty, scary, and dangerous...all three of us got the willies just being up there!
I also remember Olive messing with our computers. She scared the crap out of my boss one night by knocking on his office door. He'd open the door and no one would be there! After it happened a few times, he went to the security booth and found out that the security guard was the only other person in the building and had been at his post the whole time...
BOO!