Nenneke (Adjoa Andoh) tells Geralt in the Season 2 trailer for The Witcher, “If what you say about that girl’s power is true, you can’t help her.” While Ciri was on the run after the kingdom of Cintra fell in Season 1, she occasionally displayed moments of extreme magical power while she was under duress. However, Ciri could never control her mysterious magical abilities. Does Geralt help her harness her magic in Season 2?
Source: https://www.distractify.com/p/does-ciri-become-a-witcher