"How can you do that? Isn't it usually hard to convince people they're wrong?" 

"A Ravenclaw would have less influence in Slytherin, but more everywhere else. Are you sure you want making Slytherins better to be your main mission?" 

"No, but I don't need to convince anyone of anything for my other main missions so I can do this. And I'll figure it out."

"I still think you should talk about this with your mother, but I'll stop trying to talk you out of it." 

"Have you learned anything interesting?"

"Sure, I'll talk with my mum," she shrugs. "And what, you mean from the books?"

"Yeah! Did I tell you about goblins? And mermaids! There are so many more kinds of people than I thought."

"I read all of Charms and Transfig and Potions! I didn't know about goblins and mermaids, what are they like?"

"Goblins run the wizarding bank in Britain. I'm trying to find out what they do other places, if they're there. They have lots of rebellions about how wizards treat them. Mermaids live in the water. There are some in the lake at school, so I'm going to try to learn Mermish."

"No one really talks to the mermaids. I don't think I even knew we had any, when I was there." 

"Do magical people treat goblins that bad? Why?"

"You might want to use sources besides my son. Wizards don't treat goblins badly at all. Their rebellions are more like labor strikes than anything else."

"Maybe they want to be able to have jobs besides banker." 

"Why don't they?"

"Maybe they can, and just don't want to, I haven't met any. The books don't say that, though. I think wizards don't hire them for other things, and they don't have their own economy for some reason."

She looks at Scott's father.

"I don't know any wizard this interested in goblins. I can tell you who was Minister during the last goblin rebellion, that's about it." 

"I'm gonna ask a goblin," she decides.

"I hope you two find a friend who can stop you. You can't just fight the entire wizarding world on every little thing."

"Sadde, can we fight the whole world together?"

"Of course we can."

So Scott tells Sadde about all the magical beings and beasts he's been reading about, and he tells her very excitedly that Hogwarts has ghosts, so they'll have a chance to figure out how those work (the books don't actually say).

"Ooooh that is so cool I didn't know ghosts were a thing wait does that mean souls exist is there an afterlife?"

"The afterlife exists. Ghosts reject it, in favor of staying on Earth. Usually, they have unfinished business and can't move on."

"That's what the books say. I want to meet one."