Why am I here?

Yoko aproached the zoo, her mind swirling with thoughts about what had happened. She remembered the diner well, the...strange customer, charlie getting bitten, the faces in the window. Stop she said to herself. Don't think about that.She looked up, she was in the zoo courtyard."How did I get through the gate?" She hadn't even registered walking in. She heard a thumping noise. "Oh my God!" There was a freaking zombie elephant charging from her left, White tusks poised. And that was the last thing she saw.