Alright, I tested it, I looked at everything. I know what's happening, but I don't know why. The event is activating Oddly Dun at variable 6, a part of her quest that happens much later in the first arc. I don't know how it's activating for you just after game-start.
Does it happen after starting the game and not talking to the maid in the storage room and starting the quest Oddly Dun?