I’m thinking it’s her best friend OR the blonde haired girl cuz she heard them once.

Are you talking about who killed her? If so, same! I think it’s either the blonde hair girl or the black haired girl on her team

Mhm. I dont think it’s the guy cuz it would be too obvious if it was him. The other 2 girls would make much more sense, and not many are suspecting the people on her team much when they were also capable of murdering her.