[...She stared at the letter for a few moments. Had the Hokage really agreed to such a thing?

He couldn't really have thought she would be good for the position, so she could only assume that somehow she'd offended the Hokage again (or he remained so from before) and that was why he would assign her to such a thing.

She really couldn't attempt to turn it down if the Hokage had volunteered her.]

Lord Nagato,

Very well then, undoubtedly I will receive all of the further details of the assignment from the Hokage once he's made all of the arrangements.