She was going to let him leave, but she suddenly felt an unexpected desire to keep him here, for only a few more minutes. Maybe it would make her feel a bit better to vent after all. Even if that date had nothing - or at least very little - to do with the sour mood she was in now, getting some sort of frustration out, constructively, could only help. She hoped.
"No. No, you're not excused, Percy!" She leaned forward, palms flat on her desk, on hand alarmingly near her wand. "You- You owe me an apology, I think. Yes, you do!"