I think the easiest fix would be to take your current index.html page (your fanfic intro page) and rename it fanfic.html. Add a small link somewhere on your profic intro page for "Looking for the fanfic?" Duplicate your profic intro page and name it index.html. Upload. Anyone coming straight to janedavitt.com or using a bookmark for fiction.html will find your profic intro. Anyone looking for your fanfic will have to click the extra link, but I think most people use AO3 these days.