Another theme might be change. As summer is coming to an end, things are about to change. It could be about a character's transition from one phase of life to another, like going from the carefree days of summer to a more serious part of life such as starting a new school or job.
One possible theme could be the passage of time. Summer is a time often associated with freedom and growth, and the idea of 'before the end' might imply a sense of urgency or change coming. Another theme could be lost love. Maybe there are relationships that are about to end as summer comes to a close. It could also be about self - discovery. The end of summer can mark a transition period where a character realizes something new about themselves.
Typically in a story titled 'before the end of summer', the main characters could be young people. For instance, it might be a teenage protagonist who is about to enter a new phase in life as summer ends, like starting high school or college. There could also be friends or family members who play important roles in their life, such as a best friend with whom they share all their summer adventures, or a family member who gives them advice or causes some conflict during this time.
There could be many different stories with the title 'before the end of summer'. It might be about the events, relationships, or personal growth that occur during the last days of summer. For example, it could be about a group of friends having a final adventure before they all go their separate ways when summer ends, with themes of friendship, nostalgia, and the passing of time.
Another theme could be growth. Just like how nature grows and changes during summer, the characters in the story might experience personal growth, learning new things and becoming more mature.
One could tie up all the loose ends in the plot. For example, if there are unresolved relationships between characters, they should be sorted out. It might also be a good time to bring in a final climax or revelation to make the story more impactful.
Territorial disputes could be a theme. Maybe there was some land or resource that both sides were vying for, which created tension and led to the situation just before the war. Another theme might be power struggle. Who would have the upper hand in the region, and the competition for that power could be a driving force in the build - up to the conflict. It could also involve themes of survival, where each side was fighting for their own existence in a harsh environment.
One possible theme could be love. Summer is often associated with new romances and flings.
One book that might be similar is 'Atonement' by Ian McEwan. It has a complex narrative with themes of love, regret, and the passage of time much like stories set during a particular season.
One possible theme could be relaxation. Like spending the day lounging by a pool, reading a book, and just unwinding from the daily stress.
One possible theme is identity. The girl might be struggling to find her identity before the story unfolds. She could be in a situation where she has to figure out who she really is, among different influences like family, society or her own dreams. Also, friendship could be a theme. There might be important friendships in her life before the story that shape her in some way.