Amphorae's words were sharp and to the point. Not only did she managed to cherish the memory Michael left behind, she also expertly left leeway for Minister Brodaya to be punished. In this way, the Royal family wouldn't seem ungrateful for the sacrifices of one of their own, but could also hold someone accountable.
There were no lies in her words. As a father, Brodaya should have seen the struggle of his son. While their King should have as well, he had less of a burden to do so because his relationship was, obviously, shallower than a father to son one with Michael.
Minister Brodaya's anger twisted into sadness and despair. Maybe if Dyon had said these words, he wouldn't have taken them to heart and his anger would have just deepened. But, hearing it from the woman that his son loved shook him to the core.