Tiberius didn't smile often, but his sister's appearance brought one of those rare expressions to his face. "Tatiana," he replied, his tone about as warm as it really could be. "Not a bit, you're punctual as always," he said, moving forward and making a gesture to take her cloak. They were in the downstairs parlor, because this was where the Floo-connected fireplace was (well, here and in his bedroom, but he hardly expected his sister to Floo into his bedroom, no matter what her errand). The study wasn't Floo connected and never would be, at least not as long as Tiberius had some of his more... interesting fields of study and notes secured in there.

"Do you need anything?" he said, making a vague gesture towards the kitchen area, where he was sure at least one servant was lurking within earshot. "Or shall we head up to the study?"