I think that what she meant was that, because the question phrased seemed to be what they did during what should have been their seventh year at HW. Later on she even affirms that Ron had a key role in revolutionizing the ministry with his future career, which obviously couldn't have been joke shop.

Notice that her answer there didn't mention Auror!Harry, but instead that he went to Hogwarts.

Also on Snape she said he was a bit of a hero during the full Dateline interview. I think what you're referring to was when she said 'Is he a hero? He did do some horrible things. (paraphrase)' She didn't say he wasn't I believe, just possibly that maybe fans were making him out too heroic? Which... I agree with. He may have been brave, but his treatment of Harry and friends was never justifiable. I dunno.