Most of the Nobles were confused about Raven's true identity. However, Morgana was very clear about it. She had also heard everything about what happened on the Frozen Mountain.
She knew if a battle was to start here, the entire Royal Palace could come crashing down in an instant.
Just the impact of the clash alone was enough to kill everyone present in this hall excluding Arthur, Duke Ashborn and Raven.
She had already started preparing a spell to take her nephew out of this place along with the other Nobles. Once they were gone, her brother could freely react without being held down.
"If you wanted to attend the wedding, you didn't have to disguise yourself. I would have welcomed you as a proper guest," Arthur told Raven while Morgana continued her wordless spell.
Although Arthur had blocked his view, Raven could still see the spell that was being cast by Morgana. It was a spell that was derived from his own knowledge after all.