Complex sentence: The child who causes Sayward the most worry, however, is her youngest son Chancey, a quiet, sensitive, sickly youngster who has constant health problems and often retreats into daydreams of belonging to another family who will understand him better.
Split into simpler sentences: The child who causes Sayward the most worry, however, is her youngest son Chancey. Chancey is a quiet, sensitive, sickly youngster who has constant health problems and often retreats into daydreams of belonging to another family who will understand him better.