[There's some slight consideration before Dick just more or less spills that he knows. What the hell, right? She's gone anyway and he's involved whether he wants to be or not.]

She said she'd met her in a dream, and that she was dangerous. Now, why the hell would she not warn me or Costigan himself if she knew that she'd have reason to harm him?

[Not that he really expects him to have an answer, but. This has been weighing on his mind pretty heavily lately.]