I really need to question whether you yourself are an author. I'm going to assume from your response that you are not.
While we have no control over stories that are published on other sites, we do ask that you respect this site's policies of not asking, on our site, for copies of a story to be emailed to you. If the author chose to take it down, it may be because they have reasons of their own for not wishing the story to be available anymore. The story is their property, and even if it is fan fiction, and they cannot reasonably expect to make a profit from it, it is not public domain.