She dresses herself in silvers and whites. It is an attempt at purity or her way of laughing at it, she’s not quite sure.
Somedays she is convinced she is doing the right thing, that her magic is the only thing standing in between her kingdom and evil, that the price of her humanity is worth it. Other days, she embraces her role, The Corrupted One, they call her and she takes great joy in proving them right. She finds herself heroes, men and women of unadulterated goodness and she changes them, makes them like herself. She wants to show these people that goodness and virtue are things of myth and have no place here in this world of magic and cruelty.
Then one day, she finds him. He comes to her court with a reckless sort of swagger, like staying alive is the least of his concerns. He is gorgeous and she has been craving a new toy so she asks him to stay. They enjoy each other for a while (he is quite adept at using that hook of his) but soon, things change.
He sees her.
He sees Emma Swan, lost girl, broken woman and it scares her more than anything that he will bring her back.
(Somewhere deep down, she is more afraid that she might corrupt him too.)