Dudley's Magical Daughter?!

Dudley never thought of her daughter getting a letter to Hogwarts... but now... she's attending it! Daisy is the complete opposite of Dudley, she's bright and happy all the time! When she goes in the train to Hogwarts, she meets a boy named Scorpius Malfoy! They become friends and are both sorted into Slytherin! But what happens if a Muggle born is sorted into Slytherin?