The second daughter of William and Lydia Inglis, Milne was born on 1 December 1851 in Lambeth Walk, London, England.
Milne differed from both Zadow and Lee in that she was a working woman with grass roots involvement in the clothing trade.
Milne spoke of long working days as a cutter, and impressed on the Commission that fatigue and exhaustion were common among clothing trade workers.
Milne was committed to eliminating the practice of "sweated labour" and used her inspector’s position to lobby for the formation of an Anti-Sweating League.
Milne also used her position to promote the establishment of the Working Girl’s Club, a place for female workers to spend "a quiet and enjoyable time, instead of parading the streets".