HP: Hogwarts, but pro-generation

Who doesn't want to receive an owl letter? Sylvia said so, but no one told her that this is a relative generation!!! Wait, who can tell her why there is a portrait of the founder in her house? And what is the origin of the ancestor who has a close relationship with the founder? CP Sirius has a private setting, the original female protagonist declares: discuss the role rationally, the role's three views do not represent the author's three views, do not mention other authors' books in my book, and do not mention mine in other authors' books, thank you. ...