Her breakthrough was in 1997 when she starred as a strong and independent woman in the SVT miniseries
Glappet. At the Royal Dramatic Theatre, she has starred in several productions including playing
Regan in
King Lear (2003), Sofia in
Uncle Vanya (2008), and the title role in
Jane Eyre (2009). In 2015, Dufvenius appeared in
Den försvunna ringen at the
Deutsches Theater in Berlin. The production involved actors and directors from several European nations. It was thematically inspired by
Gotthold Ephraim Lessing's play
Nathan the Wise. Her television roles also include '
(2008), ' (2011),
Mammor! (2016), and a lead role as a lawyer in
Heder (2019). In the wake of the 2017
Me Too movement, she was one of a number of actresses who shared stories of harassment in the entertainment industry. Dufvenius went on leave from the Royal Dramatic Theatre, after criticising their handling of alleged harassment by a male colleague. In 2019, she appeared on the reality television show
Stjärnorna på slottet. ==Personal life==