Narcissa narrowed her eyes. Her husband had stammered a bit over the very name of the disease. Sadly, as entirely unjustified as it was, one's name did not make them impervious to certain things. Life did not work that way, and it was such a shame.
She gave no immediate verbal response, but allowed herself to exhale and smile. Of course, this show of relief was entirely false. Were he lying to her, she was going to at least make him feel wildly guilty.
"How silly of me to assume anything less than true perfection of you, my precious," she nodded, not stopping this verbal test. "Truly, one with a way as upstanding and true as yours could fight off all such things. That nasty could does not stand a chance!" She would be amusing herself if she were not so worried. "Yes, a cold, you say," Narcissa blinked. "Well then surely you would not be against me, say, coming to take care of you?"
In honesty, she would never go into Upper Slaughter, but perhaps the thought of exposing her to something- cold or worse- would make him more steadfast in what he had to say. Were it just a cold, well, then she just looked a little pushy now, and that could be dealt with.