Her Wake

Picture this. a girl finds herself home alone with no family found anywhere near, she can't remember how she got there and doesn't care about that at the moment. Calling her siblings and parents phones proves useless so she leaves in search of them, but in the act she notices that the air is not clear and looks lethal to breathe, in an act of precaution she cuts a piece of a towel and ties it around her nose and mouth so the air is filtered. She learns that she is a survivor of a great disaster and is told she must follow a group of people to safety. She ends up being under a young mans supervision and is told that there is more than what they are seeing that is happening. Will she find her family? And will she see the bigger picture? Or will she be doomed with the rest of the planet?