Probably Darius II wanted to establish good relations with an important noble family, from which Stateira was descended, because her brother Terituchmes married Amestris, a daughter of Darius II.
Mungkin Darius II ingin menjalin hubungan baik dengan keluarga bangsawan yang penting, darimana Stateira diturunkan, karena saudaranya Terituchmes menikahi Amestris, putri Darius II.