Perils of Katrina:Snake in the Bookcase

I had a small tin shed damaged by the storm. I just put the tin roof back on after Katrina and did not really clean it out. I had several things from my law office in it. The book cases became a home for mice and I just let it sit until I could gather the courage and time to remove the destroyed items. I am trying to salvage two of the file cabinets but most everything was destroyed by rain and critters. Today I began to remove the books to a burn pile and discovered a large mother snake curled up in a void. She did not move which is why I could go inside and get the camera for this picture. She was large, about 5 feet I estimate and I am not sure the type but assume she is a king snake? I have several in the yard I let roam around as before them I had too many mice. Plus I am told poisonous snakes keep away from king snakes. So I hope they keep the mice and cotton mouths away. I finally after pleading with her to move so I could remove the books had to get a stick and push her off. She laziely slithered down the back and tried to come back out the front until I encouraged her to keep away from my feet with the stick. I'll have to keep an eye out for her as I sill have more to remove from that old shed.