Create a clean, scalable SVG vector illustration of the Virgin Mary. She has a serene and compassionate expression, wearing a long white robe and a flowing blue mantle with a white veil covering her hair. Her hands are gently folded in prayer, and a simple golden halo surrounds her head. The design should use smooth geometric shapes, clean outlines, and solid flat colors with minimal gradients. Keep the artwork simple, elegant, and suitable for laser cutting, CNC, vinyl cutting, or high-quality printing. Use well-organized SVG paths, avoid raster effects, textures, shadows, and unnecessary anchor points. The output must be a valid, optimized SVG file.

The image shows a black and white drawing of Our Lady of Guadalupe, with her hands clasped in prayer. She is wearing a white robe and has a halo of light around her head. Her eyes are closed and her hands are clasped together in a gesture of reverence. Her hair is pulled back in a bun and she has a peaceful expression on her face.