What is the main conflict in The Forgotten Daughter by Caroline Dale Snedeker?

When the novel begins, Chloe is a twelve-year-old girl who works as a slave on the Villa Carracinia with her caretaker, another slave named Melissa. Melissa and Chloe's deceased mother Chloe, are Greek slaves captured by Chloe's father, Livaeus, who supposedly abandoned his wife and her mother years before, only to remarry, raise a new family, and fight in Egypt. Chloe's life as a slave is brutal, and she is constantly beaten. She flees to the freedom and security of the mountain forests whenever she can.