Sister In Blood

Radiant, formerly an mortal girl named Ambrai. Horribly abused by a cruel and sick father. She sought power to get revenge. Having fallen into dark magic and an evil cult, she gained the power she craved. After getting her vengence, she found an ecstacy in the power she had never known before. So craving more, she sought to summon a demon.

Enter Jedahl.

Much like Jedahl before her, however, she could not control the demon. Jedahl humiliated her, sampled the pleasures of her sweet mortal flesh, then took her back to his master (at the time) Giest. Giest saw promise in the young sorceress, and transformed her into a creature like Jedahl. Renamed Radiant for her bright, almost glowing locks of white hair, she was driven insane by the transformation (and Jedahl didn't help either). An intense love/hate relationship developed between the two. They hated one another, but loved the insane violent sex they shared due to the shared demonic blood. In time, the two plotted together to overthrow Giest.

However, their alliance fell apart due to their very nature of mistrust and backstabbing, prompting a war between them. She would eventually claim Thoryn and make him her childe, but Jedahl would claim the life of her lover, Bryony, during a battle