The hours she spent alone convinced her that she couldn't just stay there hidden in Draco's flat while Aubin ran loose around the country. For all she was aware, he'd already found his brother. She had complete faith that Antonin would be able to take his younger brother in a duel, if necessary. Blood was important to her husband. Even though he'd never been close to Aubin and didn't even like him much at all, he felt a responsibility to him because they were family. He deserved to know what happened.