Do relationship characters earn Artha? I know they can start with Artha, which strongly implies they can spend it. But do you go through the end-of-Maneuver Artha earning thing (Beliefs check, character traits, etc.) with your second-in-commands/bodyguards/stentors as well?
The short answer is yes, I believe, especially 2iC’s. But other NPCs can get the Fate award for Engagement if they are especially cool in the scene or scenes in which they appear.