Aiwass did not know exactly when Isabelle and Yulia would journey to Star Antimony.
But Aiwass had already contacted Isabelle beforehand—when Yulia travels to Star Antimony, Isabelle will bring the Queen's Guard along.
This was to suppress those Sons of the Moon who currently "rule" Star Antimony.
Although the Red Chancellor was already dead, the remnants of the Red Fortress, along with those Demon Scholars from the Rose Cross Society, might not give up their idea of using Yulia's blood to unlock Heracel's Secret Treasure. Isabelle bringing the Queen's Guard along was mainly to dissuade them from such dangerous thoughts... If anyone stubbornly insists on taking action, it would provide Avalon and the Holy Nation a perfect excuse to intervene in Star Antimony's affairs.
...However, this plan had been prepared under the assumption that the Fallen Celestial Marshal would not descend.
