Possibly. Since Fred and George thought it would have been a good deal scarier “if she hadn’t said the same thing to every single other student in their Divination class” rather than “if she hadn’t said the same thing every year/week/day,” its weakly implied that this is the first time she’s make this prediction.
edit: although “every single other student in their Divination class” is somewhat ambiguous and could mean that over the course of the semester she has made this prediction for everyone at different times.
edit: although “every single other student in their Divination class” is somewhat ambiguous and could mean that over the course of the semester she has made this prediction for everyone at different times.
Then again, after SPHEW, everyone in the school “knows” Hermione.
Sure, do we have any reason to think she’s only done it this year?
Possibly. Since Fred and George thought it would have been a good deal scarier “if she hadn’t said the same thing to every single other student in their Divination class” rather than “if she hadn’t said the same thing every year/week/day,” its weakly implied that this is the first time she’s make this prediction.
edit: although “every single other student in their Divination class” is somewhat ambiguous and could mean that over the course of the semester she has made this prediction for everyone at different times.
Then again, after SPHEW, everyone in the school “knows” Hermione.
In canon, at least, she did that sort of thing every year. That only means so much here, of course.