It was alright that he wasn't saying anything. She wasn't sure that he could say anything that would make her feel better (unless he could explain to her why, and even that probably wouldn't help). But Katie didn't really need him to say anything. The fact that he was there, listening, was help enough.
After a moment, drawing in another ragged breath and sniffling slightly, she murmured, "I don't know what to do, T... I-" Her fingers tensed in Quaffle's fur for a moment as she continued, "I have to t-tell- to tell my father and my brother? How- How do I t-tell them th-that? Telling H-hunter is bad enough, but my Dad... he and Mum have known each other since Hogwarts! I c-c-can't!"