Sarah Tries to Save the World: a post-apocalyptic novella

The entire land is wasted away. Acrid smoke billows from every corner of the earth. There are decimated houses, screaming children, crying women and mass devastation. The dead walk the Earth and the living look more and more like the dead every day. Yet scarier than all the noise is when an eerie silence creeps up on former cities, when there are no more people to cry or houses to destroy. Meanwhile, vicious people-turned-monsters created by a horrible mistake prowl the earth, ready to silence even more people. Sorry.
I probably sound a little bit too dark. The name's Sarah Sindile. And I'm one of the people who's survived the atomic bombs and plagues of World War 3. Now I'm determined to survive the next sets of catastrophes. Tsunamis, earthquakes, and hurricanes are nothing compared to what's happening. We are being silenced, slowly but surely, until no one will be left. I have to try and save the world.