Here's why:
* Many books are called "The End." This title is fairly common, so there could be many different books with that name.
* The book's plot determines the children's fate. Depending on the story, the children could have survived, perished, or their fate could be left ambiguous.
To get a definitive answer, please tell me:
* The full title of the book.
* The author of the book.
With more information, I can help you find out what happens to the Quamire children.