[1][2][4] She attended the Jaim Najman Bialik Primary School in Buenos Aires.
[1][5][6] She won the WBO world bantamweight title in July 2013, and in July 2014, Duer defeated Ana Maria Lozano of Venezuela by unanimous decision in Lanus, Argentina, in her second defense of the crown in the bantamweight 115- to 118-pound class.
[1] She is the eighth Argentine woman to hold a WBO boxing championship, and the first Jewish one.
[7] On August 26, 2016, and after a pause in her career due to her maternity, Duer won for the third time the[8] IBF world bantamweight after defeating the Brazilian boxer Aline Scaranello by technical knockout.
She lost the title in her first defense, to María Cecilia Román, by split decision.