A Dark Knight

She had nothing. Being a Princess meant nothing to Amy, she would trade it all to see her family again. She was saved, but never felt happy, she fell in love, but he vanished, promising to return. It's been 11 years since then, she was 16 soon to be married. He returned, he was the same, except he said he never saved her, as if it weren't enough, what happens when her past returns?