[3] In July 2020, Mittag announced that she will end her playing career after the women's Saxony Cup final on 30 August 2020 and become a full-time coach with RB Leipzig.

[4] She made her comeback in the winter season 2021/22 SV Eintrach Leipzig-Süd in the German Regionalliga Nordost.

[6] On 30 August 2016, Mittag joined German club VfL Wolfsburg on a two-year deal.

[4] Mittag made her debut for the senior national team as a substitute in a friendly match with Italy on 31 March 2004.

[12] In June 2019, Mittag joined third-tier German club RB Leipzig as a player-coach.