Cassie had lost the ability to perceive the future, so her suspicion was not based on any kind of prophetic vision. However, she was quite confident that the old man had resolved to end her life today.
That was because even without knowing the future, and with her memory of past visions in disarray, she still retained her analytic mind and the ability to come to conclusions based on deductive reasoning.
She also had a lot of unknowing spies supplying her with information, and therefore knew far more than she was supposed to.
Take the current situation, for example…
Nephis had joined the Great Clan Valor to destroy it from within, and spent many years enduring the hostility of its elders. Outwardly, nothing hinted at her deep hatred of the Sovereigns. Nothing revealed that she knew who had conspired to eliminate her father, and who sent countless assassins to kill her as a child.
