A stunning and devout sister of battle is portrayed in an action scene, standing confidently in front of a stained glass window. Her sci-fi nun armor reflects the intricate Warhammer 40k style, with its detailed design and dark, metallic hues. Her face is beautifully symmetrical, framed by dark eyebrows and enhanced with subtle makeup that highlights her expressive, reflective eyes. Marble walls rise around her, capturing the interplay of light and shadow, dust particles clearly visible in the dramatic chiaroscuro lighting. The scene is depicted from above, echoing the majestic impressionism of professional painters like Waterhouse and Constable, influenced by the atmospheric style of Studio Ghibli and the emotive brushwork of Jeremy Mann. The setting features detailed, dramatic lighting, creating a sense of depth and emotion akin to an artwork trending on ArtStation and CGSociety. This depiction is a harmonious blend of intricate detail and sci-fi fantasy, with a focus on the elegance and power of the sister of battle against a backdrop of stained glass and marble, seamlessly integrating elements of steel and medieval armor.