So there is not way to edit a grammatical mistake?

I get it. Edit within one hour. But on my first story this was not clear. I had to learn the hard way, and my story suffers from one word that needs deleting. Yes, I could have edited and perfected and then copy/pasted my story into your site, but that doesn't seem to be the goal. The goal is to write. But I should be able to edit small mistakes. Even a method or code that requires the approval of anyone writing further chapters of the story would be great. 

I pushed a story, went to an appointment, then noticed a grammatical mistake in one sentence.  It is forever entombed and embarrassing.