Brianna LeStrange the Dark Lords Daughter

Starts the summer before the Tri Wizard Tournament. Brianna LeStrange. She is the daughter of Bellatrix and Lord Voldemort. She grew up thinking she was a Mud blood until she discovers things about herself that leads her to the truth. The Malfoy's adopt her once they find out she's alive. She embraces her dark side, falls in love with Snape and helps her father win. Dark winning.