Hermione's Trip to the Past Creating A New Future

For twelve days Hermione has been living in 1978 reading the seven books that detail the last seven years with Lily, James, Sirius, Remus, Regulus, Amelia, Alice, Frank, McGonagall, Moody, and Albus Dumbledore, but now the books are done, and they've made their decision. Will they succeed in making the future better? Or will it just be as painful but in different ways?