What is the main conflict in Dark Magic by Christine Feehan?

Dark Magic is the story of Savannah Dubrinski, a world famous magician, and her struggle to find her place in a world of vampires and beings called Carpathians. A powerful being, Gregori the Dark One, has claimed Savannah as his soul mate. Savannah struggles with her intense feelings for Gregori and her fear that she may loose herself completely if she allows herself to love him.