The Lost Heiress

Magnolia finds out she is a witch when Dumbledore comes to the house she lived at with her grandparents. They had known since she was born, her mother having been one before she died, but had kept it from her. This is a tale of how she finds out who she really is and where her past lies. Will the darkness prevail? Rated M for future violence and smut. Eventual Severus/OC/Lucius.