She was jealous of Omort's desire for Sabine and antagonised her often. Sabine, under Omort's protection would attack her and take her organs to punish her. Hettiah dispelled Sabine's invisibility illusion when she and Lanthe were fighting a Vampire army.
Hettiah also antagonised Lanthe, who was unable to fight back because of her power's weakness and Omort's general dislike of her. After Rydstrom killed Omort, Lanthe killed Hettiah.