Sarah Riddle- the original Daughter of the Dark Lord

On Hermione's 17th birthday, she receives a strange letter from an unknown person telling her that she's adopted. When she ignores it, a dream about Voldemort flips her world upside down

Lucifer Maleficent Riddle is the daughter of Voldemort the evilest wizard ever, and she doesn't have a fiber of evil in her. Voldemort is a horrible father. He helps Bellatrix torture Lucy (Lucifer) everyday. That is until she gets accepted into Hogwarts school of witch craft and wizardry. When she arrives at Hogwarts and immediately makes friends with the Marauders will Lucy make it out of Hogwarts alive? (sorry guys I really suck at summary's) anything that has to do with harry potter belongs to the best J.K. Rowling except Lucy and Ivy I own those.