When marcel found Hayley as a Baby she was in alone and she wasn't exactly an entire baby she was 2. And she wasn't an only child there was an infant baby girl her sister. Madeleine Lebonair. Father Kieran was able to find two families. One was werewolves and the other was mortal. The marshals and the Golds. Just like her older sister Madoline was adopted into a new name,Paris Gold.