One possible theme could be displacement. The idea of being uprooted from one's home and becoming a refugee, like a ghost floating without a place to belong.
Survival is likely a theme. Just as a ghost is often associated with tenacity (in a sense, they keep 'existing' despite not being fully part of the living world), a refugee in this story must fight to survive the hardships of the journey, lack of resources, and new environments.
Another theme could be identity. A refugee may feel like a ghost in a new place because their old identity has been stripped away due to the loss of their homeland. They then have to re - form or find a new identity in the midst of all the chaos and change, which is a central part of their journey.
The 'ghost's journey a refugee story' could be a poignant narrative. It may start with the reasons why the person became a refugee, perhaps due to war, persecution, or famine in their homeland. Then, during their journey, they might have endured long treks, dangerous border crossings, and a lack of basic necessities. Once in a new place, they may struggle with cultural differences, language barriers, and a feeling of not belonging, all of which contribute to this 'ghost - like' existence where they are present but not fully integrated.
One possible theme could be hope. Despite their refugee status and all the difficulties, the love between the characters gives them hope for a better future.
One possible theme could be survival. The refugee had to endure many difficulties to survive during the refugee journey and in a new country. Another theme might be hope, as she must have had some hope for a better life that drove her through the tough times.
Love in the face of adversity is surely a theme. As refugees, they have to deal with so many challenges like finding shelter, food, and acceptance. Their love has to survive through all these tough situations.
One possible theme could be mystery. Since there is a ghost involved, there would be a sense of the unknown and the fishboy trying to solve the mystery of the ghost. Another theme could be connection. Maybe the fishboy discovers a connection between the ghost, himself and the fish or the water.
One possible theme could be revenge. If Muriel was wronged in some way during her life, her ghost might be seeking revenge in the story.
Another theme could be fear. Ghost stories are often about creating fear, and in '222 the ghost story', the unknown elements related to '222' might be used to instill fear in the readers or listeners. For example, if the ghost always haunts at 2:22, that specific time can be a source of fear. Also, the presence of the ghost in the story would naturally bring a sense of dread and unease.
One key event could be her initial flight from her home. Another might be when she found a temporary shelter during her journey. Also, her arrival at a relatively safe place could be a significant event.
One possible theme is perseverance. Since it's a long journey, the characters need to keep going despite difficulties.
One possible theme could be loss. The ghost could symbolize something that has been lost, like a person, a relationship, or a part of oneself.