Achren could not have foreseen her defeat at Caer Colur.
That the girl would cast away power in her hands and hers by right? Such a thing Achren couldn't have foreseen or even imagined.
But as Eilonwy's mind escaped her spell, there had been a fleeting sense not of casting power away, but of seizing a deeper, stronger power.
Eilonwy's years at Caer Dallben... Had she stolen that old enchanter's secret? Achren would see. She would lie in wait as long as it took. She would accept Gwydion's offer and be patient.
She had lived long enough to be patient.