At the end, Thrune's voice whispers seductively to her that she can claim her reward now - Thrune doesn't want to discourage girls from being good - and that if she would like to try this again, before sending the bag back to the Throne at the end of the day, it can be recharged by any sixth-circle wizard.
The bag comes off Carissa's wrist and falls to the floor, now open, to the sound of Thrune's seductive laughter.