Isabel Sherbourne is a fictional character from the novel "The Light Between Oceans" by M.L. Stedman. She is portrayed as a strong and compassionate woman who faces moral dilemmas in her life. Living on a remote island with her husband, she grapples with the challenges of motherhood and the consequences of her choices. Throughout the story, Isabel's character is defined by her deep love for her family and her struggle with loss. Her actions lead to significant emotional conflicts, highlighting themes of love, sacrifice, and the complexities of human relationships in the context of post-World War I Australia.