Catharina has no real care for the niceties for this conversation.

Here's mention of another one of those items I didn't really get to build up due to the way I handled this webcomic. Catharina is the court gossip, she works in places where she gets to overhear vampires and the DO speaking about things most aren't privvy to. She tends to go to Dominic for verification of things and know just how to work the system.

That's what Dominic is referring to with his statement there at the last.