I've been listening to the audiobooks of the Witcher series and honestly it's a series far more about Ciri than it is about Geralt. Garalt is only important because of his connection via destiny to Ciri (and of course he was the main character of the short stories that preceded the longform books) but as Ciri grew up and became capable of protecting herself he became less important until even destiny stopped caring about Geralt.

Also Ciri never received the full Witcher mutations because the process for performing the mutations was lost not long after Geralt became a Witcher. She received a partial mutation via a witcher's diet at Ker Moren (i imagine that's like HRT for trans people in that the hormones are what does most of the heavy lifting, and the surgeries just round out the transition) but that's it. The rest is all her being a bad-ass on her own. I'm excited to play as her and see the kinds of bad-assery and moral quagmires she finds herself the center of