Hawkeyeisnotcool
Harry Potters's older sister Annie Potter is rejected by the Dursleys' and Dumbledore has to find another home for her. Snape takes her to his request. He decides he wants her to believe she was his daughter. She discovers the truth and struggles with realizing who she is and wants to be. Snape recognizes his mistake but, is unable to gain her forgiveness. Voldemort discovers "Snapes Child" and wonders when she will join the Deatheaters. Snape doesn't know how to protect her from the real truth he's been hiding from her all along.