Gray is cautious - Lucivar doesn't get soothing unless there's something wrong - but he knows that Lucivar wouldn't be breaking it this slowly if it was dangerous. So it's something complicated, potentially unsettling - especially for him, Gray figures - but not something that is directly threatening either of their Queens, or Marian.
★ You can tell me. ★
The rage is completely gone now, replaced with determination; whatever is wrong, Gray will deal with it.