FanOfGoodPics: The next time Ciri showed up Carvo Bianco she was under guard who, upon being dismissed, camped right behind house, on the grounds of estate. Geralt was not surprised, given state of Ciri.
Ciri, the girl that was his daughter in all but name, was pregnant, and Witcher knew instantly that whatever plans of Emrys were, their fruit was right under her skin. Seeing furious blush of his daughter, Geralt knew that Cri knew. The did not speak about it, because there was nothing to be said.
Whatever happened in castle at Vizima, was very much consensual, otherwise Ciri would not have that secret smile on her lips...