Voices in the Wind, by Danielle Thomas

From her earliest childhood in Sussex countryside, Laura has seen her mother's life marred by a strange illness which recurs whenever her aunt Emma is nearby. Emma always longed to possess Laura: as the child grows up, her influence is felt in more sinister ways.

Now Laura is a woman, on the verge of the greatest adventure of her life. But first she must break the chain of evil that threatens both her mother and herself. In the sunlit paradise of the Seychelles she finally finds the courage to confront Emma's dark magic - for so long the controller of destiny . . .

Voices in the Wind is a gripping tale of passion, sorcery and the destructive power of obsession.