"I could capture her, given time and opportunity - all this chasing around after secret messengers has given me plenty of practice at moving unseen. But I am not sure I will have either the time or the opportunity. And I must first be assured that once she is caught, no one will be letting her go. What I hope will happen is that someone will be able to properly arrest her without first alerting her that she is to be arrested. If that seems unlikely, however - better to leave her be and instead try to solve the problem of thirty thousand invading Skaldi."