Responses
By place I mean the empire, not just the crossroads
does the rest of elves in the team know that their leader is a traitor?
No
beta
By place I mean the empire, not just the crossroads
does the rest of elves in the team know that their leader is a traitor?
No
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