No one is trying to frame anyone. They're just trying to make themselves look bad in front of the handsome guy they have a crush on.
Like a monster mask and Leni believes it's real and Leni screams and runs away screaming "AAAH! MONSTER!!!!" I just wanted to do something else other than Luan's fake spider, since it's done too often.
Lana only interacts with those 3 the most? Wow I never noticed that. Okay then it's either Luna or Lynn. Lana could also use Izzy or one of her other pets too.