McFall spent another six months discussing the book with editors and making small changes.
She has loved reading and writing since when she was a child, she says.
"If you want to write, you have to read a lot, not only things you love but also different genres and writing styles. Then writing will become a natural thing."
When she created the character of Dylan in the novel she connected herself with the girl.
"It's based on me. I am always nervous, not very confident, nor comfortable with boys and clumsy. Despite that, if you are determined and brave, you can achieve anything you want. It's my original concept for her."
At the end of the story, after Dylan arrives safely at her destination, falling in love with her ferryman, she becomes determined and brave enough to break rules to find him and took him back to the world, and "save him".
Now McFall has finished the sequel, which is also a fantasy dealing with more problems in the real world, which were brought about by various kinds of rules being broken in the journey in The Ferryman.