Theresa Kymena was a member of House Tremere, both in its days as members of the Order of Hermes and later during its rise as Cainites. She was one of the few Tremere to have a kind of respect for their previous clan, the Salubri, and to defy the wishes of the Inner Council.
A master of the ephemeral arts of dreams and mind magic, Theresa did not realize the transformation of her house until she herself found her Embraced during a covenant in 1139. Knowing that her old House damned itself with its decision, she had to be blood bonded by the Council for subservice.
She was sent to Greece to establish a chantry there, but when she had a terrible nightmare that showed her the diablerization of Saulot and the following ostracism of the Salubri, she left for Constantinople, where she was welcomed by Gesu and met the Salubri Achmet, who had sent her the dream visions she had experienced.
Experimenting with the dreams and thaumaturgical rituals and paths, she became a member of the Dream Circle, hiding herself from Abetorius, who was sent as an envoy of Ceoris. To complete her development of the Path of Dreams, however, she eventually diablerized Achmet, when she lost her own soul to the perils of blood magic.
Her future fate is unknown.