The term 'White She Devil' immediately makes me think of the ruthless, ice-cold antagonist from 'The Count of Monte Cristo.' Mercédès, though not outright evil, transforms into a tragic figure of vengeance—almost ghostly in her later years, draped in white like a specter of the past. But if we're talking literal 'She Devils,' the 'Mistborn' series by Brandon Sanderson comes to mind with its godlike, pale-skinned villainess, the Lord Ruler's enforcer. Her eerie, almost vampiric presence looms over the story, blending beauty and terror in a way that’s unforgettable.
Alternatively, in gothic horror, Sheridan Le Fanu’s 'Carmilla' features a predatory female vampire draped in white, preying on young women. The imagery of her pale, otherworldly allure has inspired countless adaptations. It’s fascinating how the 'white' motif often symbolizes both purity and corruption in these characters—like a twisted inversion of innocence.