This story is a sequel to Cursed Crusader

One long year has passed since Sweetie Belle contracted vampirism. Apple Bloom and Scootaloo are out of school, and Twilight has been unable to find any cure for Sweetie's condition. As part of their promise to their bloodsucking friend, the Crusaders are set to find ways to live alongside her even as the years carry on. To start their quest they are headed to Canterlot, to seek Celestia and Luna's guidance and expertise on the subject. Of course, getting information from alicorns isn't always the easiest thing in the world...