A joke?
Ginny and Cho are talking about children.
Ginny smirked. "Do you remember when you said we should have another child so that we'd have someone in every house in our family?"
Cho muttered, "When Jia first went to Hogwarts, you mean?"
Ginny nodded. "Yeah. To fill our time or something I suppose."
Cho frowned. "Yeah, or something."
Ginny asked, "What's the matter with you, dear? You were only joking... right?"
Cho shook her head. "Well, not entirely."
Ginny gasped. "You want to have another baby?"
Cho told her, "I'd been thinking about it for a while before Jia started Hogwarts though. Oh, Gin, I didn't mean to say it jokingly. I really do want to have another child with you, but only if you want that too. We're in this together after all."
Ginny said, "Well, I wasn't aware you felt that way. You should've just said something much sooner! I've always been in a large family, being a Weasley and all, but I've always wanted to have my very own big family too. Like my mother does."
Cho smiled. "Is that a yes to another child then?"
Ginny laughed. "Of course!"