When Stefan raised this concern, Cayenne felt that the issue isn't really that huge but it surely impacted a lot of people for him to open up this matter. But since she's home and the media knew about it already, she realized that the issue doesn't involve her. There were only two things that came to her mind; either people discovered his interest towards Clarisse and exposed it or he made a mistake involving people in his work.
Cayenne wasn't really sure which one was the issue and she didn't have her phone to check on her brother's account. Since her father and Ingrid came, she decided to set aside this issue and focus her attention on them. She was sill unknowledgeable of the current issue that Luiz was facing until she decided to cook lunch with Ingrid.