She possesses a unique perspective on life, in that she lacks the normal human ability to ignore things which do not fit in with a logical world-view: in "Soul Music", she is able to acknowledge the enormous size of the rooms in Death's Domain, whereas most humans can only deal with the incomprehensible vastness by pretending it is not there; "Hogfather" reveals that she shares the ability of witches, wizards and young children to see things which are invisible to most people, such as the tooth fairy, monsters and bogeymen; in "Thief of Time", she is able to identify the historical anomalies created by the History Monks' reconstruction of the shattered timeline. The latter novel also reveals that Susan possesses a sort of hyperawareness of the world around her, in that she is ""aware of every step of the rocks beneath feet and the stars overhead"."