[Considering Emiya's the closest thing she has to someone she "knows" here (even then, what's with all this secret bullshit? half these servants don't hide their identity, get with the times archer) she actually releases her prey to acknowledge the fact he's there. Which actually involves dramatically floating out of the water with her arms crossed.]

Hmph. Are you always so efficient, nameless Archer? You're far too cold; you should take note and follow my lead instead, so that you might learn something about passion!