Needy Lesnicky: I recommend you shut the fuck up!
Jennifer Check: I feel so scrumptious!
Needy Lesnicky: I thought you only murdered boys.
Jennifer Check: I go both ways.
Needy Lesnicky: How are you going to get alcohol?
Jennifer Check: I'll just play Hello Titty with the bartender.
Needy Lesnicky: You're killing people?
Jennifer Check: No. I'm killing boys.
Needy Lesnicky: Jennifer's evil.
Chip Dove: I know.
Needy Lesnicky: No. I mean, she's actually evil. Not high school evil.
Needy Lesnicky: You're a jerk.
Jennifer Check: Nice insult, Hannah Montana.
Answer: When Jen was explaining how the band members through the knife in the waterfall. When needy was walking and found the knife, the knife was beside one of the balls that the scientists were testing where the water went to. It showed the scene where the scientists were putting little red balls down to see where they came up. So no it wasn't a coincidence, she knew that was the knife.