It's Godhand (elf leader) and Margarita (priestess). Godhand already lost his arms before he came to the crossroads and pretended to lose them again to gain trust. The priestess contacts the royal family by using prayer as a guise, there's a contact device implanted into the goddess' statue. The royal family has priests as spies all over the place.
Also the royal family isn't sending additional troops because they've perceived threats on all side and sees the crossroads as a least of their worries as monsters attack everyone, not just their empire








I guess I haven't read enough real daughter stories cuz I thought the just lost her memories after the accident and started a new family elsewhere so new sibling for white hair bro