Request: Generate a portrait of a woman in her 20s with a balanced blend of youthful and mature features. Emphasize a defined jawline, a narrow nose, and lips that are not particularly full. For her hairstyle, opt for a rugged and textured look, with medium to long black hair. The eyes should be almond-shaped, large, with thick eyebrows and natural eyelashes. Her skin should have a fair complexion with a natural texture, featuring subtle freckles and imperfections. Aim for a neutral expression. Place the woman in a library setting and attire her in a cozy yet formal ensemble, such as a sweater paired with black leggings. Please ensure the overall atmosphere is inviting and serene.