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.
There are likely several themes. Home and belonging is one. She lost her home in Vietnam and had to find a sense of belonging in a new place. Trauma could be another theme, as the experiences she went through, like fleeing war, must have been traumatic. And finally, the theme of new beginnings is also possible, as she was starting a completely new life in a foreign country after leaving everything behind in Vietnam.
Well, not having read it directly, it could cover a range of things. Maybe it begins by introducing the refugee as a normal person in Vietnam with a family, a job or a normal life. But then, because of the situation in Vietnam at that time, she was forced to leave. In the story, she might share her fears during the escape, her encounters with other refugees, and how she managed to build a new life from scratch in a foreign land, overcoming language barriers, discrimination and homesickness.
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 growth. Just as pineapples grow, the girl might experience personal growth in the story.
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.
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.
We can learn about the hardships she has faced. Maybe she'll talk about leaving her home, the dangerous journey, and the difficulties in finding a new place to live.
The main theme could be survival. Syrian refugees have faced many hardships, like war, destruction of their homes. Their stories often revolve around how they managed to stay alive in such difficult circumstances.
Another challenge could be discrimination. When they flee to other countries, Syrian refugees sometimes face discrimination from the local people or even from the authorities. The story may include instances of being treated unfairly just because they are refugees.
The themes might be centered around the mystery of the spiritual realm. Since it's an exorcist telling his story, there could be a theme of redemption as he tries to free the possessed from whatever is plaguing them. Another theme could be the isolation that the exorcist might feel in his line of work, as not many people understand or believe in what he does. Also, the theme of self - discovery could be present as he faces different situations and learns more about himself and his capabilities in the process of exorcising spirits.
One of the main themes could be displacement. Refugees are often forced to leave their homes, and this story might explore how that uprooting affects them. Another theme could be survival, as they face numerous challenges in a new and unfamiliar environment.