Curiosity
Magic tastes sharp and metallic in her mouth. Saying the words is like licking a knife blade. She's never liked it, not even when it does useful things like opening locks. In Spiral Castle there was never anything pleasant behind locked doors, anyway.
But nothing's locked in Caer Dallben, except that always-shut Book. She's been shown silvery scarlines on fingers, but she stares at it, there on the table, until one day Dallben's hawkish gaze intercepts her and in one glance she knows he knows.
"No." She can hear the smile behind his whiskers. "You can't open it with magic."