Complex sentence: She was taught etiquette and French and became a well-liked companion to Aurora of Königsmarck, and followed her to Saxony and Poland in 1691, where Aurora of Königsmarck became the mistress of king Augustus.
Split into simpler sentences: She was taught etiquette and French and became a well-liked companion to Aurora of Königsmarck. In 1691 she followed her mistress to Saxony and Poland, where Aurora of Königsmarck became the royal mistress of King Augustus.