Joren didn't know how to react to this one yet. He glanced at Virena, who had dead-pan eyes, and found that Ness had yet to make the 'move' he was expecting.
He was a little disappointed.
However, this just proves that she's still inwardly a child. This feeling was further fortified by seeing her form of a child. After some thought, he figured out the appropriate reaction to this.
Everyone was just waiting for Joren to speak up and say something to Ness. They believe he would stop this farce just like how the situation regarding Monstein was immediately solved after he arrived.
Of course, that was an exaggeration. Monstein had created too much destruction to be left off just like that. However, their attention temporarily shifted at the thought of Ness learning that Joren is alive.
For this sake, Virena chose to let Monstine scot-free first.
At that moment, Joren finally moved from the gate and entered the "Principal's area."