[He doesn't even have to fully comprehend this to understand that he couldn't live with himself if he just stood by while she used someone else for whatever sort of magic that seal would be. Being the intelligent one often meant feeling like a coward, even when self-preservation was a key thing in any existence.

After a moment, he takes a deep breath.]

How quickly do you have to do it? Or would you have time to exchange it the tree at the post office before unspeakable horrors were unleashed?