Harry, Ron y Hermione

Helena was a tall witch with waist-length hair. She wore a floor-length cloak.
Helena Ravenclaw (late 10th century — early 11th century), known as the Grey Lady after her death, was a witch and Rowena Ravenclaw's daughter. She attended Hogwarts School of Witchcraft and Wizardry and was Sorted into Ravenclaw house. At some point, she stole her mother's diadem and ran away to Albania. Rowena became fatally ill, and hoping to see her daughter one last time, sent the Bloody Baron, a man who harboured an unrequited love for Helena, to find her. The Baron killed Helena when she refused to return...

Dear Rose,
I am writing this letter in response to yours, and my worst fears have been confirmed. Your father hasn't seen your letter, and I'll be honest with you, I hope he never will. You see, not all Slytherins are bad, Rosie. Your father knows that, but.. well.. he'll always be the proud Gryffindor, lets say. But let me ask you, are these people he's spending time with dangerous? Mean? If they are, then try to speak with him. If they're not.. just let him make new friends. I await your response.

Sincerely,
Mum

My worst fears have been confirmed. What does that even mean? The owl sits at my...