The implication is that Doniger is making this up. Did Batra ever really even hear the story of the Ramayana, let alone read it in any language? My mother, a practising and devout Hindu, told us the story of the Ramayana many many times, (which she reads every year from beginning to end during the Malayalam month of Karkidakam, the Malayalam version written by Thunchaththu Ezhuthachan in the 17th century), and the episode in which Sita berates Lakshmana for not going to rescue Ram, being killed, as she thinks, by Mareecha, is heart-breaking. Sita throws accusation after accusation at him, and still he stands his ground, staying firm to the duty to protect her, as Ram had enjoined him to do. He finally breaks when she accuses him of wanting her for himself, and leaves her in the protection of the Lakshmana Rekha. This is in Valmiki Ramayana, Aranya Kanda Chapter 45, and on P 208 of Adhyatma Ramayana in the section Mareecha Nigraham, as my mother readily located over the phone for me a moment ago.