Zeus had wanted to communicate with Hecate, and this idea wasn't born just today. In fact, he had planned to have a talk with the Goddess of the Magic Net who controlled witchcraft, after gradually understanding the laws of faith's emergence. Today's events were merely a prelude at best.
Of course, the reason he intended to "have a talk" rather than directly issuing Divine King's decree for Hecate to follow his commands lies in Zeus' subtle dread of her.
As the Divine King, he was never one to repay kindness and return favors, and Metis' fate was the best proof of this. If not because Hecate was so special, how else would Zeus be so generous to her, even personally promising her the privilege to remain independent of the Divine Court? All of this was, after all, an act of courting and soothing the Goddess of the Magic Net.
Early on, before the feast to honor the victors after the epochal turn, the Divine King had initially prepared the control over a swath of starry sky as a reward for Hecate—Zeus had hoped for the Underworld, but the Goddess of the Magic Net didn't have any entitlement related to the Underworld, and there was already the Goddess of the Nether Moon and the River of Vows in existence.
Thus, the Divine King settled for the vastness of the celestial space as a second choice.
On one hand, this could express his intention to co-rule the heavens with the other deities, and on the other, the starry sky wasn't truly under Zeus' control. Even the presence of the Moon Goddess was much more significant than that of the nascent Divine Court.
Allowing Hecate to go there, she could use the Moon as a stepping stone, to create checks and balances with the Ancient Gods in the starry space, preventing any Star God from deciding to follow the example of the ancient God of Sun and attempting to become the master of the entire celestial realm during the formative moments of the Divine Court.
The Lightless celestial deity Coeus was who Zeus was most wary of. Though this Titan Principal God had been reclusive for a while, after all, he briefly united with Cronus in the last epoch and launched a war to unify the starry sky. This ancient Titan conducted his affairs with discretion, but he was indeed a deity no less formidable than Oceanus, the God of the Ocean.
For the then Divine King, the very existence of Coeus was a great threat.
"I'll make a visit first, at least I need to understand what exactly she intends to do. In any event, neither Leto nor my eldest son can afford to suffer any mishaps."
Having made his decision, the Divine King immediately stepped out of the palace. He planned to visit the southeast of the Earth, but before leaving, Zeus still waved his hand, summoning his frequently used messenger Zephyrus.
"Your Majesty, what are your commands?"
Zephyrus, the God of West Wind, asked respectfully upon being summoned.
"Keep a close watch on Olympus, and don't let Hera do anything unnecessary. If she sends anyone out, stop them first; if she herself intends to leave, tell her that at this point, she cannot change anything, and everything can wait until my return,"
Zeus spoke gravely, his words not entirely clear in many respects. However, the God of West Wind simply bowed slightly, indicating understanding.
"I will do so, Your Majesty, but if the Heavenly Empress insists on leaving—"
"... Just relay my message. That will suffice."
Massaging his temples, the Divine King didn't want to think about these headache-inducing matters anymore. Seeing that Zephyrus understood his intent, in the next moment, he transformed into Thunder, flying out of Mount Olympus.