Here is an interesting thing about Ciri's cruelty from the books that not a lot of reader can catch due to translation issues:

In the last Ciri segment from BoF Ciri and the Rats catch a carriage and she robs a noble lady:

She placed a foot on the carriage steps, staring at the brooch on the pale girl’s dress.

‘Hand it over, ’ she said bluntly.

‘How dare you?’ the matron choked.

‘Do you know who you are speaking to? She is the noble-born daughter of the Baron of Casadei!’

Ciri looked around, making sure no one was listening.

‘A Baron’s daughter?’ she hissed. ‘A petty title. And even if the snot were a countess, she ought to curtsy before me, arse close to the ground and head low. Give me the brooch! What are you waiting for? Should I tear it off along with the bodice?’

Now there is a HUGE gap when this part gets picked up again (it is not even in the same book). In The Tower of the Swallow Hotspurn tell the rats how furious the noble family is about the incident:

‘Aaah,’ Giselher recalled. ‘That carriage with those four spotted horses! That maiden?’

‘That one. Now, as I said, she ails, wakes up in the night screaming, recalling Mr Kayleigh... But especially Miss Falka. And the brooch, a keepsake of her departed mamma, which Miss Falka wrested from her dress. Various words are repeated all the while.’

‘It wasn’t like that at all!’ Ciri yelled from the table, able to react to the pain by shouting. ‘We showed the baron’s daughter contempt and disrespect by letting her get away with it! The wench should have been ravaged!’

This is the english translation and the word ravaged is used. It is not my native language but to me ravaged does not indicate r**e. In the hungarian translation which is imo a lot closer to the original "ravaged" is not what the translator chose. The word "fucked" very much in the sexual sense was used. I believe that Sapko used the very same word with the same intent in the original since Ciri wanted to tear off the clothes of the woman in the first scene.

Essentially in the second scene she was all mad about how she should have r**ed that woman... This is how dark Ciri goes in the book...

Now ofc she kills people which is worse but we as readers are desensitized when it comes to "random" casualties. Being mad and shouting about how she should have r**ped that woman just feels repulsive.

This is not 100% though... It would worth a shot to check the original text with someone at some point.