Yes, it is. The fact that it's based on a true story gives it an extra layer of authenticity and emotional depth. It often makes the events and characters more relatable, as it's something that actually occurred in real life.
We can learn about resilience. The real - life events it's based on must have involved people dealing with difficult situations, and through the story we can see how they might have coped.
I'm not entirely sure without reading the novel specifically, but usually in a story like this, there would be a central protagonist who is deeply affected by the main event. There might also be a character who serves as a moral compass, guiding others through the difficult times. And there could be a character who is a source of conflict, perhaps someone who is in denial or has a different view on how to handle the situation.
One of the main themes is grief. The story likely explores how different characters deal with loss, especially in the context of a tragic event. Another theme could be redemption, as characters might strive to find meaning or make up for past mistakes in the face of such a difficult situation. Also, the concept of community is probably important, showing how people come together or fall apart during tough times.
It could be a spiritual or religious genre. Since it's about the 'hereafter', it may involve concepts from different religious beliefs about the afterlife.