Petra Fate unknown

Petra Finch wanted to be a musician like her mother. Lucy bought her a wooden violinist at the festival, and she ran off to plan a thank-you gift. That night she climbed the hill to the house. The party found her toy in the den, and a ghost wearing her face at the balcony door, and Rose told them Petra was a lure the house uses.

Then they found her chained in the cells under the house, filthy and starving, and they freed her. She rode on Mayla's back. In the fight in the black water, the creature took her and put her inside its chest. Nobody saw what became of her in there.