The look that slid across Walburga's face was harsh enough to kill. Her features turned to ice and all she could do was stare blankly at Sirius and his...wife while trying to process the news that had just been dropped on her doorstep, quite literally. This is why she did not want people in her home or coming by unannounced because when people dropped by unannounced they felt that they could do whatever they liked, however they liked regardless of whether the person they were doing it to wanted it or not. Of all the things that Walburga had thought would happen in her home, this was not one of them. This would never have been one of them, ever.
Without another word spoken to either of them Walburga turned and headed back into the house, the door left standing open behind her and her son and his...person could take it to mean whatever they wanted to because there was no way that Walburga could be privy to this or listen to whatever else was going to come from them without more wine. And even then, she wasn't sure that she had enough wine in her home to properly deal with whatever this clusterfuck was going to be.
"KREACHER," she bellowed as she moved through the hallways and headed for the sunroom, a headache already building behind her eyes, "I DEMAND MORE WINE, IMMEDIATELY."