He doesn't immediately respond; instead, he clasps his hands behind his back, deliberating whether an Imperius curse wouldn't go amiss and letting her work herself around to the idea. It sounds mad, he's well aware. No more so than being kidnapped to Baedal, of course, or the fact that he's defending a time traveling doctor against a mad witch who ought to be dead, but all the same.

It's not until she looks away that he has any reaction at all, and it's one he would never want to admit: a flash of pity. And guilt. Having something of an overarching knowledge of her first seven years as a witch also includes the horrors she endured, and in some small way, he's exploiting it. Granger knows what Bellatrix Lestrange can do.

"What would you suggest?" Almost polite disinterest. "Hellsing would assign her a bodyguard, perhaps, and Martha is quite adamantly against that idea. For argument's sake, let us assume she would agree. Would you trust any of them to give her the same sort of protection your or I could provide? Do you trust them to be unbiased in this? Rodolphus Lestrange is in their employ, as well. I will remind you of your own distrust of the Ministry of Magic thanks to their associations with Lucius Malfoy, and he was not responsible for torturing two Aurors into insanity. Most importantly, however, I invite you to tell me who you believe would protect her better than I - or even half so well."