Mandaley has travelled widely in Asia researching and retracing the events in her books. She was educated in Perth, completed postgraduate studies at the Australian Maritime College in Tasmania, and then moved to Brisbane.
Perkins's writing evolved out of her fascination for South East Asia and its colonial history, and the experiences of her own family. In each of her books she has woven the personal story of someone who was there through the important events of the time, attempting to recreate the scenes both vividly and accurately.
Tropic Tide (1998) was her father's biography, which covered among other things the fall of Singapore during World War II, the prisoner of war years on the Burma Siam railway, and the Communist Emergency in Malaya. Her second book, Hanoi, Adieu, is her French step-father's very personal story set against the dramatic events of the fall of the French empire in the Far East, leading on to the Vietnam War with the United States.