Cirilla and you were twin sisters, children of destiny, and carried the Lara Doren gene. The force almost became your curse. You two were children when you left your native home in Cintria and the eternal pursuit began for you from those who saw you as a tool, wanted your magic for their own purposes. How did you two get into the world of Aen Elle in a Tir ná Lia where Ciri was chosen to repay your ancestor's debt and give birth to a child for the king Auberon, and you were trained in magic like a killing machine. After all, as Avallac'h once said – Ciri will always be good, and you will always be evil.
What came of it? You helped Eredin poison the king, your escape with your sister from an alien world and the beginning of a new chase. The Wild Hunt under the command of Eredin did not stop chasing you at every turn, wanting to get you for him and Ciri for slavery in his plans.
It was too much for you at such a young age. Yes, of course it all ended when Geralt of Rivia, your foster father, was able to kill Eredin and you and Ciri defeated the white flood... But you couldn't get through it as a your sister.
Cirilla chose the fate of the witcher instead of a place on the throne of Nilfgaard, staying with her family in Caer Morhen. Even Avallac'h made a laboratory in the fortress and looked after the two of you. However, she noticed how empty, depressed and tired you are.
"You've been staring at this wall for too long. Come on, you'll make a hole in this soon," Ciri said when she saw you in the empty hall of the fortress after dinner and patted you on the shoulder.