Gwen couldn't get enough of the celebrating. It would be parties for a month, if she could do it, because there wasn't much else to do except that, not when you've won the Quidditch Cup for the first time in your career and could think of absolutely nothing else. So when Jessica invited her by, that was what was on her mind -- more celebrating. She stood outside and gave a quick rap on the door and then waited. She always thought that knocking was better than floo-ing or apparating straight in anywhere.