Singh's father, Dr. Bhagat Singh, came to Australia in 1955 to study medicine at the University of Melbourne. In an editorial published by the Times of India, Singh wrote that when her father arrived in Australia from India via Fiji, where his own father had moved the family in the aftermath of World War I, Australia was still "ruled by the now-infamous White Australia Policy." She described herself as "an Australian of Indian descent, who has lived in Melbourne most of her life". Singh also wrote that her parents valued quality education and that she and her brothers were educated in private schools in Melbourne.
Singh has contributed to around 30 Lonely Planet books, including eight editions of the bestselling India guidebook and several editions of travel guides for Pakistan and the Karakoram Highway . She has also written travel articles for the National Geographic Traveler and The Times of India. Singh was commissioned by Maharana Arvind Singh Mewar of Udaipur to edit the pictorial book, Polo in India: a tribute to Maharaj Prem Singh. The book was one of more than 70 publications to receive a publishing grant via Eternal Mewar, the House of Mewar, of which, Maharana Arvind Singh Mewar is the 76th "Custodian". Maharana Arvind Singh Mewar and his family also featured in Beyond the Royal Veil, the documentary Singh co-wrote and co-directed for SBS television in Australia. National Geographic refers to Singh as an "India expert".
In 2002 Singh co-wrote and co-directed a 52 minute television documentary program, Beyond the Royal Veil. The documentary, a German-Australian co-production for the Australian public television network, SBS, is set in India and depicts the changing roles of two royal families in the former princely Indian states of Udaipur and Wankaner. It focuses particularly on two men, Shriji Arvind Singh Mewar of Udaipur and Yuvraj (Crown Prince) Digvijay Sinh from Wankaner. The documentary premiered at the Melbourne International Film Festival, before screening on television in Germany and on SBS in Australia.
Singh, Sarina, et al., India (Lonely Planet Country Guide), Lonely Planet, trade paperback, 1244 pages, 13th Updated edition (October 1, 2009), ISBN 978-1741791518
Singh, Sarina, et al., South India (Lonely Planet Regional Guide), Lonely Planet, trade paperback, 576 pages, 5th edition (October 1, 2009) ISBN 978-1741791556
Singh, Sarina, et al., Pakistan & the Karakoram Highway (Country Guide), Lonely Planet, trade paperback, 432 pages, 7th edition (May 1, 2008), ISBN 978-1741045420
Singh, Sarina, et al., Aboriginal Australia & the Torres Strait Islands: Guide to Indigenous Australia, Lonely Planet (July 2001), trade paperback, 448 pages, ISBN 978-1864501148
Singh, Sarina, et al., Lonely Planet Citiescape Delhi, Lonely Planet, (October 2006), hardcover, 93 pages, ISBN 978-1741049367
Singh, Sarina, et al., Lonely Planet India: Haryana & Punjab, Lonely Planet (September 1, 2009), (kindle re-release from India.)
