I believe Sarah Rice could be a daughter of Joseph Dukes and Sarah A. Dukes. She would be a couple of years older than Emilie. Sarah married Lemuel Rice, a school teacher who came from Maine to teach at the Columbia Academy. They lived in Colerain, NC. Sarah and Lemuel had a son named Joseph Dukes Rice. They had several other children. There is another site on Ancestry that has come to the same conclusion and has posted Sarah as a daughter of Joseph and Sarah Dukes.