[1] She is married to Amit Chaudhuri, who is a renowned Indian novelist, poet, essayist, and musician; they have one daughter, Aruna, a singer-songwriter based in London.
Rosinka is the daughter of Sri Ranjan Khastgir, one of the earliest graduates of IIT Kharagpur who retired as the Executive Director of Hindustan Copper Ltd.
Her books include Gentlemen Poets in Colonial Bengal: Emergent Nationalism and the Orientalist Project (Seagull: 2002), Freedom and Beef-Steaks: Colonial Calcutta Culture (Orient Blackswan: 2012), and The Literary Thing: History, Poetry and the Making of a Modern Cultural Sphere (Oxford University Press: 2013, Peter Lang: 2014).
She has also edited and introduced Derozio, Poet of India: A Definitive Edition (Oxford University Press, 2008), The Indian Postcolonial (with Elleke Boehmer, Routledge, 2010), A History of Indian Poetry in English (Cambridge University Press: New York, 2016), An Acre of Green Grass and Other English Writings of Buddhadeva Bose (OUP, 2018) and George Orwell's Burmese Days (Oxford World Classics, 2021).
Her present research is tentatively titled India's First Radicals: Young Bengal under the British Empire.