Create a detailed illustration of Halia Thornton, the ambitious and calculating

Create a detailed illustration of Halia Thornton, the ambitious and calculating leader of the Rockseeker Guild in the fantasy setting of Fandalin. Halia should be depicted as a strong and authoritative woman in her early 40s. She has a commanding presence, with sharp, intelligent eyes and an elegant yet practical outfit suitable for a powerful guild leader. Her attire should include elements that hint at her dual role as a businesswoman and an agent of the Zhentarim, such as a stylish, high-quality robe with subtle, dark symbols. The background should reflect a sophisticated office or guild hall, emphasizing her influence and the power she seeks to wield over Fandalin. Halia’s demeanor should convey both her ambition and her strategic mind, making her an intriguing and formidable figure.