It's not based on a true story. The plot and characters of Mr Inbetween are the result of the writer's imagination and creative process. Although it might draw inspiration from real-life situations to some extent, it's not a direct account of actual events.
Well, the story ending of The Keeping Hours is explained through a series of events and revelations. It involves the characters making important decisions and facing the consequences of their actions, ultimately leading to a conclusion that reflects on themes of love, redemption, and moving on.
Writing the ending of a novel did not necessarily require the ending of all the characters. It depended on the plot and theme of the novel. Some novels may choose to end the story at the climax to show the fate and final ending of the characters, while others may focus more on exploring the inner world and relationships of the characters, thus providing more details and background information at the end.
Whether or not to tell the ending of all the characters also depended on the author's personal preference and writing style. Some authors may try to make the ending and actions of the characters as reasonable and complete as possible to strengthen the logic and cohesion of the novel, while others may choose to leave out some details to better convey the theme and emotion of the novel.
Whether or not to explain the ending of all the characters should be decided according to the plot and theme of the novel. If the author wants the readers to better understand the theme and emotions of the novel, they may need to provide more information and details in the ending.