I don't buy it

She showed us her report cards and her tests. Most of them were good, a few weren't. It was clear that she hadn't studies for some tests. Very obvious, although she claimed she did study. She had tears in her eyes even before she showed her tests. Sorry kiddo, but I don't buy it. You can do better and you know it. In fact, you don't like bad grades. That's why we don't make too big a deal of it. Because we know the bad grades by themselves are your biggest punishment. I hope you learned your lesson. We'll see.