Also, we know that the "Bête Noire" is a forbidden spell... But for this 'law' to exist, there had to be experiments to determine if the spell is safe or not, and to forbid it. And for them to know that it needs a Bravery Soul to invert its trait, to then create the Bête Noire too... So it means that technically someone already had casted a Bête Noire spell BEFORE Betty right?
Indeed, for a fact to be known and written down, someone had to have done it in the first place, is just logic.
Don’s stress it too much though, that’s not important rn