That wasn't quite the question he was hoping for but he did ask for it, didn't he? Marcus knew she wasn't asking to be nosy or mean, she was just... and he was just very much... Marcus ignored the question at first.
"Sugar? Cream?" he was high society, after all. He knew how to serve tea properly, even if it was a little odd to see a grown, burly man doing it. When she answered he used his wand again to pour what she wanted into her tea and what he wanted in his.
Then, after a long pause he drew his eyes up to catch her gaze.