Fridge / Le Commencement du Diable Blanc

• So Remy going to Beauxbâtons instead of Ilvermorny can be explained by the fic being published well before Rowling revealed the name and existence of the American school, yes... But there's a reason In-Universe for it, too: Louisiana is a former French colony, and French influences stayed quite important in New Orleans. To the Wizarding Government - whose mentality is kinda stuck in the Dark Ages - a "muggleborn" from this town has the right to attend the academy.
• In keeping with "Harry and Voldemort are mirror opposites", Xavier introducing himself to Remy actually parallels Dumbledore meeting Tom Riddle at the orphanage — a man with powerful abilities seeks to induce a youth into a new world, with the child reacting badly at the beginning then calming himself.