All the Light We Cannot See

How come a novel was so precise in description unless someone lived that character in real life?
The Author gave two parallel characters: one is fiction and another is non-fiction.
Marie-Laure, though she is blind you’re never going to feel pity for her blindness. The author structured the character of Marie-Laure the way, she takes us along with her throughout the novel as if we are holding her shoulder.
A small plot but narrated superbly and I enjoyed reading every sentence because of the unique presentation of details of every scene. And another hero of this book Werner and you love a small portion of his love with Marie.
This book will definitely become a favorite one after reading it.