She married at Woodlands, Calcutta, on 25 February 1914 Alan Mander, brother of Lionel (who had married her sister Prativa Sundari Devi in 1912) and Geoffrey Mander of Wightwick Manor, by whom she had two sons and two daughters.
In London, Princess Sudhira became noted for her campaigns for better relations between England and India, agitating for Indian women's suffrage with her sister Prativa Sundari Devi, her aunt Mrinalini Sen[6] and Princess Sophia Duleep Singh,[7] working with the latter for the Red Cross as Voluntary Aid Detachment members and fundraising for Indian soldiers during the First World War.[8]
She died at 40 Hereford Rd, London, on 7 January 1968, when her will was proved in London on 15 February 1968 at £91.[9]