How come none of the core four members think to realize that whoever this Ghostface was from the police enforcement field?

I mean no one has access besides them to get evidence like Roman, Mickey, Jill, Charlie and etc' mask? 😭😭😭

I'm sorry, but I'm going to have one of my OC's call that out. I just have to think which one, but it'd most likely be Daisy Mei - Riley.