What is Coraline's biggest fear?

At the beginning of the story, Coraline feels secure in her comfortable existence. However, she is bored by her life and is constantly seeking stimulation or encouragement from either her environment or her loved ones. Once Coraline is put in an uncomfortable and compromising situation, she learns more about herself and her inner strength. In the other world, Coraline is confronted by various fears that intensify after she conquers each one. She must conquer her fear of the other mother in order to restore her reality. As the story progresses, Coraline realizes that her biggest fear is losing those whom she loves the most. As Coraline overcomes each obstacle, she realizes that she is strong, powerful, and capable.