The Girl in the Castle Inside the Museum by Kate Bernheimer, illustrated by Nicoletta Ceccoli

From chapters.ca:
Once there was a girl who lived in a castle. The castle was inside a museum. When children visited, they’d press against the glass globe in which the castle sat, to glimpse the tiny girl. But when they went home, the girl was lonely. Then one day, she had an idea! What if you hung a picture of yourself inside the castle inside the museum, inside this book? Then you’d be able to keep the girl company. Reminiscent of "The Lady of Shalot," here is an original fairy tale that feels like a dream– haunting, beautiful, and completely unforgettable.