As a result, the biography claims that when Andrews was disobedient or rebellious, her mother would lock her in her bedroom without food. Anderson’s ghostwriter and biographer Andrew Neiderman told The Guardian, “Her mother would lock her in her room and not give her dinner if she got angry at her. She controlled who Virginia could see, what she could do, and punished her for not doing what she wanted.”

Source: https://www.distractify.com/p/flowers-in-the-attic-true-story