One possible theme is loyalty. Since the explorer is Her Majesty's, loyalty to the queen and the mission would be important. Also, innovation, as the steampunk world is full of unique and creative inventions.
The themes could include exploration, of course, as the title suggests. There might also be a theme of power struggle. In a steampunk world, different groups might be vying for control, and the explorer could get caught in the middle. And the theme of mystery, with all the strange steampunk elements and unknown places to explore.
It could be a really interesting story. Maybe it's about an explorer in a steampunk world who goes on adventures on behalf of Her Majesty. The steampunk aspect might mean there are steam - powered machines, gears, and Victorian - style fashion. The explorer could be facing all kinds of challenges like strange creatures or difficult terrains while exploring new lands or uncovering secrets in this unique steampunk universe.
Friendship is also a likely theme. Maybe Jace meets different characters in his story and forms strong bonds with them. For example, he could befriend a lost fairy or a talking mouse. Through these friendships, Jace learns about kindness and cooperation.
One possible theme could be friendship. Maybe Rosie has a best friend in the story, and they share secrets or have little adventures together at bedtime.
There could be Dora's friends like Boots, Benny, and Isa. Maybe they all gather in Dora's house for a sleepover and share stories about their favorite places in the jungle.
There could be a theme of discovery. The traveler discovers new places and cultures, and the wife might also discover new things about herself during his absence. Additionally, the theme of loyalty is likely, as the wife stays faithful and waits for her husband, and the traveler remains committed to his wife while away.
Love could be a major theme. The love between the traveler and his wife despite the distance. Also, longing. The wife longing for her husband's presence when he's away traveling.
One possible theme could be friendship. In many bedtime stories, characters form strong bonds and help each other out, and Selena Moreno's story might be no different.
A third possible theme could be discovery. The Scotsman may discover new things about himself, other people, or the world around him during the train ride. He could meet people from different backgrounds on the train, and through conversations with them, gain new perspectives. The changing landscapes outside the train window could also be a form of discovery, as he sees parts of Scotland he may not have known before, and this could lead to a greater appreciation for his homeland.
One possible theme could be love, as it might be about the love between Bianca and her mommy.
A theme might be the cycle of life in the ocean. In a bedtime story with an ocean's lullaby, it could talk about how different sea creatures grow, reproduce, and rest. It could also have a theme of unity, showing how all the elements of the ocean, from the smallest plankton to the largest whale, are connected and contribute to the overall lullaby of the ocean. For example, the movement of the waves is affected by the winds and the tides, which in turn affect the lives of all the sea creatures.