Erin Malfoy, the youngest child of Lucius and Narcissa Malfoy. Sister to Draco Malfoy. I could go on forever. She's in her 6th year at Hogwarts, one of the hardest years for her. She's.... changing..? Not in the way you think. Her heart is changing. From the cold-hearted Malfoy she used to be, to this new, happier Malfoy she's supposed to be.
Draco takes notice and starts to change too, as does her cousin Jango. But her parents and her aunt aren't happy with it. They don't want this. Draco and Jango have to keep up the cold-hearted game in order to stay alive, as they're Death Eaters, and the Dark Lord doesn't want softies.
But Erin, not so much. That is, until people start dying, and her friends need a spy. One they can trust. So Erin joins the elite team of Death Eaters. She gets branded with the dark mark as well. But when she returns to Hogwarts, her friends aren't happy.
They wish she hadn't joined him. Now, Erin is at a risk to die. But she'll do anything to keep her friends, even if death is the answer.