Harry barely registered someone walking by him as he held his tea, but when he did finally note who they were, he caught the nod and pursed his lips. He was waiting for some sort of comment, some sort of backwards remark that might break Harry right there, but instead it was just the nod. Harry almost left it at that, offering his own nod in return; yet, he couldn't. Marcus wasn't his favorite person in the world, but Marcus had been through enough hell in his own life that Harry could relate to some degree.
Pushing to his feet, he set his tea down and moved after Marcus so as not to wake any of the patients. He'd wanted to talk to Marcus about Ethan for some time, but then the kidnappings happened and frankly it wasn't the time to worry about that stuff. He knew Marcus didn't want to talk to him, and Harry wouldn't make it unbearably long, but he did want to at least take the higher road than Harry'd been taking recently.
"Hey, Marcus. How's Katie? I mean... obviously she's not doing great, no one really is," lightly gesturing towards Ginny's door, "But, you know. For as good as she can be, how is she doing?"
At this point he'd realized he was still holding his wand and slipped it back into the little holster he had on his belt. He usually used his sleeve when he had his robes, but his muggle clothing he'd created the holster just for his wand.