Kristoff didn't drag the issue about them not being real siblings anymore. But he became cold towards Adeline.
Elyana couldn't do anything about it. She talked to Kristoff several times but he was adamant to forgive his mother. It was just a consolation for Adeline that Kristoff didn't ask her to leave the mansion. That way, she still gets to be a mother to him. She still gets to prepare his meals and serve him. For her, that was more than enough.
It was also a good thing that Kristoff didn't change how he treats Elyana. If there was any change, he became sweeter and thoughtful. Sometimes, Elyana needed to remind herself that all of Kristoff's gestures meant nothing so her heart would calm down.
But in the office, Kristoff was the usual busy bee. He poured out his life's frustration on
