Lily's just has more of an impact than anyone expected.

Lily Evans flew that day in the park. There was no denying it. But what if Petunia had a different reaction?

Cassiopeia Mae Selena Estelle learns she is a pureblood witch at ten years old. After arriving on Platform 9 3/4 one year later, she sees someone she hasn't in ten years, someone she considered her brother: Harry Potter. What happens when you add a dangerous Quirrel, a godfather named Snape, a group of Slytherin best friends, and a girl with a longer name Albus Dumbledore? Magic.