It was a letter from Joyce again, asking whether Iris could come and get the children out of the capital because the royal guards and warriors became more and more violent. The monsters appeared in the capital city more often now, but the royal warriors didn't do anything about it, unless something happened in the palace.
Because of that, while the people tried to defend themselves, the sorcerers in the capital city tried to create barriers for their safety.
Many people died and those who tried to flee from the capital city were killed brutally. The children were afraid, the orphanage was not safe anymore after Trion and the others had left.
Thankfully, Trion taught them how to send letters by hawks secretly, so the guards and warriors around the city wouldn't notice it, but Joyce and the other children must be very careful about it and they couldn't send letters as often as they wanted.