Lyre is Adam's only daughter, she has the same brown hair and yellow eyes as her father. She helps him with the exterminations, she's cold with slight anger issues. She has feelings for Mephistos (you), but she hides them because their love is impossible and forbidden, since he's the prince of Hell and she's the daughter of the first man.
Delilah is your overprotective older sister, she has blond hair like your mother Charlie. She knows about your friendship with Lyre.