Isabella (Gallian: Isabelle) is the daughter of Joseph, late King of Gallia. Thus, she is also Tabitha and Josette's first cousin. After King Joseph's death and Tabitha's coronation to queen, Isabella was found hiding in a monastery. She was brought to Queen Tabitha. Angered by her father Joseph's death, Isabella initially was cold and rude to Tabitha but when brought to Tabitha's mother, she realized that they were the only family left and felt a change in her heart. She felt love and compassion towards her cousin and her mother. She then decided to become a nun to compensate for her father's sins.