I wonder why Brangoire lied to the queen (I think it's to protect Aquill, but why and from what), and if he had the time to update Mellenisse of the story. I'm not familiar with Radiant, so I don't know if the queen appeared there, and what are her dispositions.
You may have already read the main series at this point, but I want to write this... Boadicea is a good person, a very good person actually.
She comes across as haughty many times, but she is truly caring and a good leader, when needed, she has no hesitation to put herself in danger for her people.
Brangoire didn't tell her because... well, it is a composite reason, there is the pregnancy (which is a WHOLE thing), there is the past "incident" with specters (another WHOLE thing), and I would bet Brangoire thinks the fact Aquill is a "wooded" may ruffle some feathers, so he is playing it safe.
He trusts her, but she trusts him too, and he is the type that likes to deal with things himself if he can, which may cause complications, but it is too needed so that Boadicea herself doesn't have to deal with everything.
And there is the fact that the war left the country without many lords, some lost in battle... others lost for other reasons.