Martin had decided to perform surgery on Geralt. He preferred Geralt's safety with all the risks he would face. He didn't say anything to Clara about this. He only said that Geralt would have surgery without explaining anything.

Clara wasn't a stupid child. Surgery meant that something serious had happened to Geralt. She tried to ask Estella, but Estella said everything was fine. Actually, Estella didn't want to hide Geralt's condition, but Estella didn't want to make Clara sad, while Martin ...