Schäfer has won twenty-one singles and nine doubles titles on the ITF Women's Circuit in her career.

On 23 March 2009, she reached her best singles ranking of world No.

Schäfer made her WTA Tour main-draw singles debut at the 2016 Copa Colsanitas, when she defeated qualifier Chloé Paquet in the first round.

[1] Schäfer completed her Abitur in Thuringia, and studied Economics at the University of Hagen.

[2][3] Only main-draw results in WTA Tour and Grand Slam tournaments are included in win–loss records.