GENSO SUIKODEN III
From the (in-game) Old Book Vol. 11: "Winged humanoid. Attacks with arrows of light and by summoning shadows to inflict damage. Appears near Flame Champion's Hideaway."
(Is also a regular enemy at the Ceremonial Site.)
This villainess and the game "幻想水滸伝III" are copyrights of Konami.