Describing working with his daughter Connolly said: "After playing a spooky kid in Hammer horror Wake Wood, she wanted to be in a film she could watch. Having worked on that film which was shot in winter and involved prosthetics and special effects, this was relatively straightforward. She dug deep to play this little girl and to give her a vulnerability and strength in keeping with the story. She was a joy to work with. She did everything in a couple of takes. And I'm not just saying that because I'm her dad. It was fun."