The Half-Blood Prince's Long Lost Daughter (Severus Snape Fanfiction)

What if one night, eleven years ago, Severus Snape had a one-night stand with a young wizard and didn't know he got her pregnant? Michelle Harris and Severus Snape were drunk and had a one-night stand at a bar. Three weeks later, Michelle found out she was pregnant. She tried to track down the mystery man but couldn't locate him, so she raised her baby alone. Now, eleven years later, Annabelle Harris gets accepted into Hogwarts, only briefly knowing what her birth father could potentially look like. Rumors flow about Annabelle having similar characteristics to their potion's teacher. What happens when Severus Snape starts his own investigation with the help of Dumbledore? What happens when Annabelle realizes her complex potion's teacher could be her birth father? How will Severus Snape react knowing he has an heir and a long-lost daughter? Can he change enough to become a father figure to Annabelle? Well, read to find out.