and didn't make a fuss? In the third book. She'd been using the time turner all year. So when she heard a twig snap outside Hagrid's cabin, she might have seen her future self but ignored it.
...British lady ....? went to bed, woke up two hours later, logged on and sent 3 emails to people inviting them over for night games and drinks. When they turned up, she screamed bloody murder. Apparently she had no idea.