 Démarez started to work as a school teacher first in Petit-Fort-Philippe (Graveline's hamlet) from 1898 to 1901 and then in Dunkirk from 1902 to 1908.It was 2 February 1914, before the Douai Court of Appeal, Démarez was declared officially a lawyer, 14 years after Jeanne Chauvin first female lawyer in France.After Démarez there wasn't any other (new) female lawyer in France until 1920.