 In 2007, she debuted at the prestigious Salzburg Festival, as Hermia in Shakespeare's "A Midsummer Night's Dream".In 2013 she returned to Salzburg in a leading role in Nestroy's "Lumpazivagabundus", directed by the director of the Burgtheater, Matthias Hartmann.In 2015, Hörbiger claimed two major successes at the Burgtheater, first in Tolstoj's "The Power of Darkness", then as Ismene in "Antigone" by Sophocles.