Complex sentence: With increasing years her health grew better, so that she entered school, but at the age of fifteen years left it and became the wife of E. Burke Collins, a rising young lawyer of Rochester, and soon after they sought the mild climate of Louisiana.
Split into simpler sentences: With increasing years her health grew better, so that she entered school. At the age of 15 years left schol and became the wife of E. Burke Collins, a rising young lawyer of Rochester, and soon after they sought the mild climate of Louisiana.