In 1932 she married Paul Hasluck, who (as Sir Paul) was Governor-General of Australia 1969–1974. In 1974 he was offered an extension of his term by the Prime Minister, Gough Whitlam, and he was willing to serve an extra two years, but Lady Hasluck (as she then was) refused to remain at Yarralumla longer than the originally agreed five years. Whitlam then appointed Sir John Kerr. Historians of the period are certain that if Hasluck had still been Governor-General in 1975, as he would have been had his wife not intervened, the constitutional crisis of that year would have ended differently. Hasluck himself implied this in his book, "The Office of Governor-General" and also in the Queale Lecture.