Wagener works as a journalist for the weekly newspaper Woxx,[3] as well as for various media outlets as a freelance writer and announcer. She has also worked on historical research at the University of Luxembourg.[2]
She writes primarily on feminist topics, as well as sociology and history.[2][4] In 1997, she co-edited the history of women's rights in Luxembourg "Wenn nun wir Frauen auch das Wort ergreifen…": Frauen in Luxemburg 1880-1950.[5] She published a biography of the politician Lydie Schmit, "Méi Sozialismus!" Lydie Schmit und die LSAP 1970-1988, in 2013.[6][7] In 2019, to mark 100 years of women's suffrage in Luxembourg, she co-curated an exhibit at the National Museum of History and Art about the history of voting rights in the country.[8][9]
In November 2019, after a meeting of the Council of Government of Luxembourg, she was appointed to the board of directors of the public radio station radio 100,7.[3]
Wagener was a founding member of the Green Alternative Party, a precursor to the environmentalist party The Greens, in 1983.[1][10] She served on the Luxembourg communal council from 1991 to 1994.[2]
In the 1994 Luxembourg general election, she was elected to the country's Chamber of Deputies, where she represented the Centre constituency as a member of The Greens.[3] In May 1996, she introduced one of the country's earliest bills to legalize same-sex marriage, nearly two decades before the Chamber would go on to pass such a measure.[11][12] She was reelected to the Chamber of Deputies in the 1999 Luxembourg general election, but declined to run again in 2004, stepping down after the election that year.[3]
