Fauth was born in the Styrian town of Sankt Peter, to parents Walter and Ingrid.

[2] She appeared as a qualifier at the 2001 US Open and defeated Anne-Gaëlle Sidot to reach the second round, where she lost in three sets to Virginia Ruano Pascual.

[3] In 2002, she debuted for the Austria Fed Cup team in a surprise win over the United States, away from home in Charlotte, North Carolina in the first round of the World Group.

Prior to the tie, American star Jennifer Capriati was dismissed from the team for not complying with team rules, meaning that Fauth received a walkover win in the scheduled second match, giving Austria a 2–0 lead with Barbara Schwartz having already put them ahead by winning the opener.

She played a singles match against Monica Seles and partnered with Marion Maruska in the doubles rubber, losing both, to leave the scoreline at 3–2 in Austria's favour.