The Maya and Hellewise duel.
Maya and Hellewise Hearth Woman were the twin daughters of Hecate, the first witch ever. They were both very good witches but as opposite as night and day. You can read what happened before the battle that led Maya and Hellewise to become eternal enemies here.
After Maya became a vampire she began proliferating her race. She attacked the tribe of witches that she and Hellewise ruled. Theorn, who is now known as Thierry Descouedres – a boy that Hellewise had always liked – became her first victim.
Hellewise realised she would have to stop her sister. The witches of the tribe wanted to fight the vampires but Hellewise knew they could never match the superiorities the vampires possessed. So instead, Maya and Hellewise fought one on one.
Details about the battle itself are not elaborated on but Hellewise apparently won the battle and drove Maya and the other vampires out of the village.
We know Maya survived long after the battle because she stalked Thierry and his soulmate Hannah Snow for the next twenty thousand years. But what became of Hellewise? Well, even though she won the battle, Hellewise endured too many wounds and died of her injuries not long after the duel.
Hellewise will always be remembered by her progeny as the warrior who saved witches from eradication by vampires.
* Soulmate tells the story of this epic duel.