In 1739, Col. Lucas had to return to his post in Antigua to deal with the political conflict between England and Spain. He was appointed lieutenant governor of the island. England's involvement in the War of the Austrian Succession thwarted his attempts to move back to South Carolina with his family. Eliza's letters to him show that she regarded her father with great respect and deep affection, and demonstrated that she acted as head of the family in terms of managing the plantations. Her mother died shortly after they moved.