Amethyst the Apothecary Goddess ♡

Amethyst is actually not a Demoness, but a Goddess, who was sent to Earth to rid it from all bad souls. 
 
Amethyst's weapons are her crystals, and herbs, she uses them to collect the souls of the ones that don't belong, while her wild hair gives off that same sweet scent as the Demoness, that attracts these human souls. 
 
Amethyst chose to live in the Chvrch among the Demoness that people consider so dark, evil, and impure, however she was able to realize that in order to have Balance, you must have both the dark and light, so instead of hating each other, the Demoness, and a number of Goddesses live in the Chvrch together in peace and harmony.