An Uninvited Guest

Living close to the Everglades, I am used to seeing alligators all the time, but never did one visit my home. This is the story about me, waking up at night, having the most horrific experience in my life.

Have you ever had dreams where you thought it was reality?
This is a short story about a girl who finds an 'unexpected' guest knocking at the sliding door of her house. However, is it a guest or is it someone she knew all along? Did this all really happen?