Whether it's confirmed, Adelinde acts freakish. Silent movement, thumping coming from a room, only she has the keys too, and weird meals. A whole floor of guests disappeared one night, and Adelinde wasn't surprised. Rumours from Moco and Hille spread, but no one's discovered anything yet. She's a serious yet caring maid, that cares about both Master Diluc and Kaeya. Despite being significantly older than them, and their mother figure after their father died, she still refers to them as Master.