He grasped her outstretched arm and gently probed with his magic. Just like Shireen and Sansa, Arya only had dormant potential. Quite similar to a squib. If they had begun practising at the age of eleven, they would have been able to become witches, albeit weak, or at least the local equivalent. But with outward manifestations of magic nearly impossible, and without developing it, it had atrophied and gone dormant. That begged another question - was what faceless men did even magic?