Lady Harimann was the mastermind behind the assassination of the Vaels, the ruling family of Starkhaven. Lady Johane is a potent mage, and took control of the Harimann family following her father's death. She murdered the Vaels (long-time friends of the Harimanns) in order to further her own family's power. She placed Goran Vael on the throne of Starkhaven, as she believed she could easily manipulate him. To solidify her hold, she prepared to force her daughter, Flora, into marriage with Goran.
Sebastian Vael enlists the aid of Hawke in visiting the Harimann Estate after he discoveres that Lady Harimann was behind the murder of his parents and brothers. Inside the estate, the Harimanns are shown to be behaving very oddly, which Sebastian comments is completely out of character.
In the caves which run beneath the estate, Lady Harimann is discovered convening with a Desire Demon, Allure. It transpires that she unearthed the Demon while expanding the Estate and used her family, giving them to the desire demon in order to gain more power in an attempt to control Starkhaven. She naively believed that she was strong enough to resist the demon but it subtly influenced her until all she could think of was seizing Starkhaven. Lady Johane attacks Hawke and Sebastian but is killed and her family freed from the demon's clutches.