The fact that the other stops is already enough to take Guardian, well... off guard. But the two simple words have their eyes narrowing. Something is amiss. Something usually is, but--

They lower their hands. They turn around. Guardian will not stay here; they don't want to, they will not stand here and argue with a fascimile of of yet another person they cared for, in any sense of the word.

"As if that matters," they mutter, stalking off. Someone's sulky.