[ Give him a second to weigh the pros and cons here. Don, at least, appears to be an exceptionally honest person, so maybe he can trust her with this with the right caveats. ]

You can have that task on the condition that you deliver it without incident. If you encounter any injustice, I want to hear about it before you take matters into your own hands.

[ PLEASE DON'T KILL ANYONE ON THE MAIL ROUTE ]