A full body portrait of an exceptionally beautiful woman in a fantastical sci-fi setting, depicted in an oil painting style. She stands as a noble sister of battle within a ruined cathedral, her expressive eyes and dark eyebrows highlighted by tasteful makeup including mascara. Her face is symmetrical and detailed, framed by a forehead tattoo and a heart of steel armor, which is worn and cracked from battles. The environment showcases broken marble walls, laced with dust and bullet holes, illuminated by dramatic, detailed lighting that captures the somber mood of the setting. She wears a veil and headwear, completing her majestic appearance. This scene, inspired by the Warhammer 40k universe, evokes the masterful brushwork of artists like Waterhouse and John Constable, featuring intricate textures and high detail that create a trending piece on ArtStation and CGSociety.