Complex sentence: Louise Fitzhugh (1928-1974) was an American author of Young Adult fiction, including "Harriet the Spy", "The Long Secret" and "Nobody's Family is Going to Change".
Split into simpler sentences: Louise Fitzhugh (1928-1974) was an American author of Young Adult fiction. Her work includes "Harriet the Spy", "The Long Secret" and "Nobody's Family is Going to Change".