Lily is the tritagonist of Thomas and the Magic Railroad and the granddaughter of Burnett Stone. She lives in the city with her mother. With the help of her grandfather, Patch and Thomas, they helped restore Lady to her former glory and returned the magic to the Magic Railroad.
Lily wears a purple jumper, white khaki trousers and black shoes.
- Mara Wilson
- Houko Kuwashima (Japan; voiceover)
- Gaby Ugarte (Latin America; voiceover)
- Leyla Rangel (Latin America; TV Version; voiceover)
- Marie-Luise Schramm (Germany; voiceover)
- Geneviève Déry (French speaking Canada; voiceover)
- Anat Erlich (Israel; voiceover)
- Lily's age is 12 years old in the film.
- Lily has a stuffed bluebird that she takes everywhere with her, which looks similar to the bluebird from the Shining Time Station television series logo.
- It is unknown if her last name is Stone or not.
- Both her Wooden Railway and Wind-up toys have her in a green shirt, depicting the outfit she wore when getting on the Rainbow Sun.
- In the original script:
- Lily, married to Patch and telling the story to her children twenty years later, was the narrator.
- Her father was away at work.
- Lily has an unborn sibling, which is the reason for her going to visit her grandfather.
- Lily is the only character in the film to appear in all three scenes in which the Magic Railroad appears.