“How did the author develop the character in"Libby Day"?"

The author developed the character "Libby Day" through traumatic situations and uncomfortable and painful memories.

Explanation:

"Libby Day" is the main character of the novel "Dark Places". She is a strong and fearless character, with a strong sense of justice. To build this character, the author of the book encouraged her to experience a series of traumatizing experiences, so that the character had painful memories that were the driving force of her determination.

In other words, the author used pain to build a personality for this character.