[ If anything, Henry is used to refusal, especially from people who already know who he is. A gentleman with a monster in his heart - most people with a working sense of self-preservation would have avoided him. Even if Irisviel doesn't know his true name right now, the possibility still remains. ]

It is, indeed. Servants like me are able to survive without a mana supply from our Masters, it is quite strange. But because of this, we can sense it a little better than most.

[ Even easier for him, since he's promoted. ]