Karen's Secret Valentine (Baby-Sitters Little Sister #82)

U R 2 Good 2 B 4 Got 10 Karen’s class is having Secret Valentines. Hiding notes and gifts for a Secret Valentine will be fin. but then Karen picks Pamela as her Valentine. ugh. Pamela is Karen’s best enemy. Karen decides to be nice to Pamela anyway. But then Pamela gets some mean notes. And Karen did not write them. Suddenly there are a lot of Valentine mix-ups. What is going on with the Secret Valentines?