Public Relations Control
There had been a lot of publicity around Marissa Wayne leaving for Star City, and it was something she couldn't maintain.  Instead, Bruce had to calm the media storm surrounding the five individuals it affected the most; Bruce, Marissa, Tim Drake, Keith Queen, and Ollie Queen.  Bruce had managed to remove the Queens from the equation and settle things down by explaining that he sent Marissa to live with Tim Drake for an extended period of time while Bruce was dealing with health issues.  It wasn't true, of course, but news of Bruce with a concerning health condition kept the media at bay.  Anything surrounding the name "Wayne" at that point was generally about who would take over Wayne Industries after he died.

It should be fairly quiet until Marissa finally returns home.  Bruce knew full-well that Tim would be accompanying her.