Harry Potter: The Slytherin Mud-Blood [Under Overdue Editing]
31 parts Ongoing (I started this book in 8th grade, so I'm currently adding to previous parts and editing any mistakes I left behind as an early writer. So if things look inconsistent, that's why, this book is OLD.)
Salazar Slytherin never allowed muggle-borns in his house and there has never been a muggle-born sorted in Slytherin.
Naomi Lockery grew up as a Muggle, with her father and backyard farm. Suddenly during the summer, she gets an acceptance letter from Hogwarts. This didn't surprise her father because, his cousin was a wizard, and he had hoped that his daughter would also be born a witch and be accepted into the most popular magic school.
While buying her books and supplies Naomi runs into the Weasley family and is immedeatly captivated by one of the twins, Fred Weasley. She and her father became friends with the family real quick and are ready to set off to school. However, as Naomi is sat at the stool with the Sorting Hat on her head, it was a shock to hear that she was sorted into Slytherin!