Severus motioned to the door, and it swung open, letting his visitor inside. "Serafina," he said in greeting, letting the door shut again. "It's been a while." He motioned to a chair near his desk for her. "I've ordered tea, but let the house elf know if there's anything in particular you'd like." His own tea was usually pretty spartan, so he'd at least requested something a bit more fitting. No doubt they'd whip up something; Severus was never entirely sure what they did with all the food they made, anyway. He knew not all of it was sent up to the tables.
He made a few marks on the paperwork he'd been poring over, then set it aside, leaning back slightly in his chair. "I'm a little curious about this sudden interest in school politics, as I'm sure you can understand."