"Uh, if I'm really careful, it's not a problem for me most of the time either," Ginny hesitantly said.
"Oh?" Hermione asked with surprise, trying to keep her voice down.
"Well, I know that Fred and George have done magic around the house and never received a warning from the Ministry. Mum punishes them when she catches them since it's…" Ginny did air quotes as she intoned, "not right."
Hermione stared at the other girl her eyes slowly going wider. "Really?" Ginny nodded. "That's not fair," Hermione huffed. "That means that Muggle-born students are being treated unfairly because they can't get away with the same thing."
"It's not totally fair, and yet it is," Harry said, receiving a baleful glare from Hermione. "Really, take me for example. Sure, my relatives knew about magic, so that would argue I should be able to use it. But what if I was using magic and Dudley's friends walked in and saw me? That would let the secret of magic out and I wouldn't have had any adult witches or wizards to cover it up, or to get help in covering it up. It's not fair, but they do have a reason."
Hermione deflated and relented. "All right, you have a point and I should have thought of that."