Why Didn’t Janaka Run Away

“Then a voice, sounding like a human being, was heard from the sky which said, ‘O king, this child is rightfully your daughter.’ Thereupon my father, the righteous King of Mithila, was greatly pleased. Obtaining me as his daughter, that ruler of men felt highly blessed and fortunate.” (Sita Devi speaking to Anasuya, Valmiki Ramayana, Ayodhya Kand, 118.31-32)