Upon returning to Cannes Palace, Andrew told everything that had happened with Ayla in the Demon Realm to his wives who had already gotten up and were just having breakfast with the children.
They all immediately concluded the same thing as Andrew and Oliver. The hooded men who attacked the harpies must have been members of Purgatory. In fact, Candice's ability was activated upon hearing what Andrew said.
Her ability is one of the most powerful among all the abilities his wives had received, but it activates without regard to their will. It can be a random event or a simple conversation like this that activates it.
