Elder Adelaide is a member of the Cult of the Mothman in Fallout 76, introduced in the Once in a Blue Moon update.
Background
Elder Adelaide was part of a group of cultists that were tracking the Ogua. When she encountered Luca Costa and his pack brahmin, she pretended to be a trader and arranged a deal with him that was to take place later that week. The cultists then planned an ambush, which was successful, as Costa did not fight back. In turn, they took his cargo, explosives and pack brahmin.[1]
Appearances
Elder Adelaide is mentioned in Fallout 76, introduced in the Once in a Blue Moon update.