I'm not sure specifically as there could be many interpretations. It might be a fan - made story that takes a different approach compared to the original work related to 'Steele Grey'. It could involve new plotlines, character developments, or alternative scenarios within the context of the 'Steele Grey' universe.
I don't have enough information to determine the main characters. It could be the original characters from the Steele Grey universe but with different personalities or roles, or it could introduce completely new characters.
One great fanfic could be 'A New Beginning for Christian and Anastasia'. It might explore their relationship further after the events in the original story, like how they handle family life together.
The Steele Dossier is a complex document. It has elements that are likely fiction. Some of the claims in it have not been verified and were used in a politically charged environment. So, in my view, it's more on the side of fiction.
Well, as far as I know, there's no definite proof that Christopher Steele was writing fiction. Maybe more information is needed to make a conclusive determination.
Yes, it is quite popular. Since the 'Fifty Shades' series has a large fan base, many fans are interested in exploring different versions of the story through fan fiction.