Born in Zermatt, Valais, Aufdenblatten made her World Cup debut in March 2000 in a giant slalom at Sestriere. She scored four podium finishes on the World Cup: one win in a super-G in Val-d'Isère in December 2009, and three third places in downhill at Haus im Ennstal (2004), Bad Kleinkirchheim (2006), and Lenzerheide (2014). Aufdenblatten competed in three Winter Olympics (2002, 2006 and 2014) and her best finish was a sixth place in the 2014 super-G at Rosa Khutor.