Severus woke up at around four in the morning, and as much as he tried, he wasn't able to get back to sleep. After an hour of fruitlessly staring at his ceiling, he gave up and got ready for the day, deciding to take a walk around the castle to get away from Fleur. I don't want to give her the wrong message by staying and cuddling in her arms once I'm up. This is just a platonic arrangement. As he meandered through the hallways, he found himself at the one place he had been avoiding for over a year. This was where the deed was done, and the Dark Mark was launched over the castle.