Another theme could be family. Her role as a wife might be explored in relation to family values and relationships. For example, how she manages her household and interacts with her family members. Also, community could be a theme. Since she is the 'next - door' wife, her connection to the local community and how she contributes to it would be relevant.
One possible theme could be friendship. As a neighbor, the little wife might form strong friendships with those around her.
I'm not sure specifically as there could be many different stories with this title. It might be about a young woman who is the neighbor and perhaps her daily life, relationships or some unique experiences she has.
One possible theme could be deception. The neighbor might have been deceiving everyone around them, pretending to be friendly while having evil intentions. Another theme could be the violation of trust. Neighbors are supposed to be people you can trust, but in this story, that trust is severely broken.
One possible theme could be friendship across boundaries. Maybe they are from different backgrounds but still became good friends.
One possible theme is growth. The girl next door could grow from a shy, introverted person to a confident individual. Another theme might be community. She could play an important role in bringing the neighborhood together, like organizing block parties.
One possible theme could be mystery. There might be something strange or unexplained about the house next door.
One possible theme could be friendship. Since it's about the girl next door, it might focus on the bond that developed between the protagonist and the girl.
One possible theme could be friendship. The story might revolve around building a strong bond with the neighbor through various in - game interactions.
Love could be a theme. Maybe the flower boy next door is the object of someone's affection, and the story explores the development of that love. Another theme could be self - discovery. As the story unfolds, the flower boy himself might discover new things about his identity or purpose in life.
Another theme might be self - discovery. The girl could be on a journey to find out who she really is, perhaps trying different things and learning more about her own values and dreams. She might start out as a shy girl but through various encounters, she discovers her hidden strengths and capabilities. This could be a central theme in the story as it shows her growth and development.
Not having read the story, we can only guess. The little wife is surely a key character. There could be a neighbor who is either friendly and helps her out or is jealous of her. There might be a local shopkeeper who she interacts with regularly and through whom we learn more about the neighborhood and her place in it. And if there's a mystery or a secret in the story, there could be a character who holds the key to that mystery, like an old acquaintance from her past who shows up unexpectedly.