In 2012 she landed the role of Countess Rebecca von Lahnstein on the hit series Verbotene Liebe, where she is still currently working.Kästel gained international attention and praise for her performance when her character eventually fell in love with Marlene von Lahnstein (portrayed by Melanie Kogler).Between 2012 and 2014 Kästel's character struggled with her feelings with Marlene, who at the time was in a relationship with her brother, Count Tristan von Lahnstein (portrayed by Jens Hartwig).Ultimately, Kästel's character falls in love and has a romantic relationship with Marlene, which received an international following.[1] Despite the couple's end in mid-2014 and Kogler's release from the show, Kästel continues to act in a starring role.
