What does The Woman In Black want and why does she kill people who see her?

The Woman in Black seeks vengeance for the tragic loss of her child, who died under distressing circumstances. Her spectral presence is tied to her grief and anger, and those who see her are often cursed with misfortune or death as she manifests her wrath. By killing those who witness her, she perpetuates her suffering and ensures that her pain is shared, reflecting her unresolved trauma and desire for recognition of her loss. Ultimately, her actions serve as a haunting reminder of the consequences of neglect and loss.