Complex sentence: She is considered the most important figure in children and young adult's literature of her country and, with twenty-two books published, some of them in Colombia, Mexico, Peru, and Spain, this author has attained significant international recognition.
Split into simpler sentences: She is considered one of the most important figures in children and young adult's literature of her country. With twenty-two books published, some of them in Colombia, Mexico, Peru, and Spain, this author has attained international recognition.