I don't know how important the Covenant of the Morning is, but the main thing is that they're a cult on this planet who worship the CEM waves and flowers. The drug I saw was made up of the latter.

[he takes a sip from his drink]

Before Rosamund used the code, she was in a similar state as when she broke down in trial, if calmer—on edge, angry with all of us.

[he's quiet for a moment, frowning as though thinking about something.]

... As soon as she used it, though, she... reacted strongly, in a way that never happened to me when I tested it out. In short, she immediately went from being sullen to horrified—what she'd done to Diluc was finally allowed to sink in, it looked like.

[disclaimer i am not far in my pc with rosamund but]