This post contains spoilers for "The Witcher" season 3 part 2.

Of all the supporting characters who fill out the sprawling cast of "The Witcher," Tissaia de Vries (MyAnna Buring) might be the most underrated. Yennefer's mother figure also served as Aretuza's headmistress, a strong and sometimes exacting influence on generations of girls who grew up into powerful, world-changing women. That legacy wasn't enough to keep her going after she failed to save her students from the violent aftermath of a coup attempt or stop her lover Vilgefortz (Mahesh Jadu) from going after Ciri (Freya Allan). In the season 3 finale of Netflix's adaptation of "The Witcher" book series, Tissaia commits suicide, breaking the heart of her former students -- especially Yen.

Tissaia's death comes just after Buring's most heart-wrenching performance to date, in which Yennefer finds her mentor obsessing over the movements of the opposing armies after accidentally instigating the attack...