Since that kiss, something changed between them. Cedric began to actively pursue Cecilia, while Cecilia no longer rejected his attentions. King Arkadion and Fiona noticed their closeness. King Arkadion emphasized that he would support whatever Cecilia chose. Meanwhile, Fiona said she would support whatever made Cecilia happy.
A few days after Cecilia's last conversation with Cedric, Cedric truly kept his promise. He wrote a polite but firm reply letter to Damian, explaining that Prince Cecilion—who was, in reality, Cecilia—was now in a safe place with King Arkadion, while the news of the plague was just a hoax created by Queen Julia.
The letter was sent via Blaine's trusted courier, and just two days later, Damian's reply finally arrived.
[If Magenta ever needs my help, I only need one word. I will come. This time, without hesitation.]