Career
On April 2, she reached a career high Women's Tennis Association-ranking of Number. She is coached by her father, Reinhard Müller. Müller started the year with middling results, reaching the second round at the Australian Open, losing to Elena Dementieva in three sets.
From January to April, Müller never came past the second round of a tournament.
In May, at the Qatar German Open in Berlin, she defeated Eleni Daniilidou and thirteenth seed Shahar Pe"er to reach the round of 16 where she lost to Svetlana Kuznetsova 3:6 2:6. Müller then reached the second round of Roland Garros, losing to Slovak Dominika Cibulková, and the second round at The Championships, Wimbledon, retiring against Agnieszka Radwańska.
In the previous round, she double-bageled Anna Smashnova. She reached the final at the Internazionali Femminili di Palermo before being defeated by Hungarian Ágnes Szávay in two sets.
Singles (1 Women's Tennis Association, 10 International Tennis Federation)
Doubles (1 Women's Tennis Association).