Moda is the elderly proprietor of a magic shop called Moda's Wares in Castle. She was visited by Zaheer when he was investigating Vampire King activity in the area, and helped him to discover Wormy's cult.
She confused Zaheer with a "foul necromancer" the first time they met due to his Ankou death aura and attacked him with a shuriken that had a strip of paper attached to it, but he managed to defuse the situation diplomatically.
She is very knowledgeable about the vampire kings and the Shadowfel. She is also not a hag.