Create an ultra-realistic image of a medieval warrior heroine wearing leather armor adorned with intricate metal details and a tattered cloak. Her attire features numerous straps and decorative elements. She wields a long sword with an intricately designed hilt. The background is shrouded in mist, enhancing a mystical and epic atmosphere. Her expression is intense and focused, adding a touch of enigma and readiness for an impending challenge. Incorporate subtle fantasy elements like faint glowing runes on the sword, and a hint of soft, ethereal light highlighting her figure, giving the scene a magical aura.