Atrox had been gone for some time, and his 'body' had been returned to the Capital. Slya and Tiber had mourned, and the Flagbearers used the excuse not to move immediately.
Then, word came from the Capital that Clan Leader Thrain was going to host all the Master Knights and use the opportunity to send a final goodbye to his brother and father.
Captain Orin had urged them on, subtly telling them they really didn't want to anger the new Clan Leader. With no reason to continue dragging their feet, they agreed to depart.
They wouldn't be taking their Knights with them—they would be meeting them in the Capital. Tiber knew the reason why they did not take them along, and it had nothing to do with them being unprepared.
Tiber and Slya were asked to come along. Captain Orin said it would only be fitting for them to see their Young Master one last time. They agreed because that was what was expected and what they would have done had the situation been real.