Ruby and Emerald: Year One

Melody Founders, the mystery child that was somehow left on the stone steps of Hogwarts, the girl who was raised in the magical school for children ages 11-17. As she turns 11, finally being able to go to classes like the other kids she grew up around, a boy with messy hair and bright green eyes is her first friend her own age, the second is a sometimes rude blonde, third is a red head with some anger issues, and the fourth is a bushy haired girl with a know-it-all attitude. Will she stay out of the limelight with the famous Harry Potter as her best friend?
This is the prequel to Silver and Gold, what happened leading up to her being sent to the past.