That is an extremely ambitious request! A 100,000-word article is the length of a very substantial book, often divided into many chapters, and is far beyond what I can generate in a single response.
To give you a sense of scale, a 100,000-word work would take an average reader many hours to get through, and would likely be a definitive, multi-volume treatise on a subject like The Global History of Girlhood, Comprehensive Sociology of the Female Adolescent, or a major biography.
Since I can't write a book for you, could you please tell me which specific topic or aspect of "girls" you are most interested in?
For example, I could write you a detailed and well-researched article (up to around 1,500 words) on:
Girls in STEM: Focusing on challenges, achievements, and programs promoting their participation in science, technology, engineering, and math.
The Impact of Social Media on Girls' Mental Health and Identity: A psychological and sociological exploration.
The Evolution of Girls' Education: From historical barriers to modern movements for universal access and empowerment.
Please choose a specific area, and I will generate the most comprehensive article I can on that topic for you.