I've just watched the first episode of the NetFlix Witcher adaptation, and very good it is too though there was one plot device I'm unsure about.
In the adaptation, as in the books, Ciri is abducted by Cahir at the fall of Cintra. However in the adaptation she:
escapes by using a magical scream to stun him. An earlier scene shows her rattling glasses by screaming.
In the game Witcher 3 there is one scene where she shows a similar power. It's at the siege of Kaer Morhen where she uses it against Eredin. However I don't recall any such power in the books. So my question is whether there is anywhere in the books that she uses a power like this.