She was born in Bombay to Scottish-born saddler Robert Scobie and Elizabeth Buchanan, née Farms. In 1901, when Robert was elected as a Labor Member of Parliament to the New South Wales Legislative Assembly, they moved to Sydney, where Grace worked as her father"s secretary.
Around 1878 the Scobies moved to Menindee in New South Wales. She was appointed inspector of factories and industrial inspector in the Department of Labour and Industry in 1916, tending to support employers over employees. She and her father both left the Labor Party as pro-conscriptionists that year.
In that year she ran for the Soldiers and Citizens Party for the state seat of Eastern Suburbs, but was not successful.
By 1927 she had moved well away from the council, and was president of the Professional Women Workers" Association. She ran for election again in 1932, contesting Bondi as an independent supported by the United Associations of Women, of which she was secretary.
During the 1930s she worked to reduce maternal and infant mortality, and was involved with the Australian Federation of Women Voters and the Feminist Club. She died at Bondi in 1957.
Scobie campaigned for conscription in the two referenda, served as a council member of the National Association of New South Wales from 1917 to 1918, and was given the Officer of the Most Excellent Order of the British Empire in 1918. In 1920 Labor News censured her for condoning harsh treatment of illegitimate children as a board member of the State Children Relief Board. From the 1920s Scobie was a member of the National Council of Women of New South Wales, but in 1924 the political department for which she worked refused her permission to attend daytime meetings and she was forced to resign.
