I thought the narrator girl having a sore throat was the scheme but now I'm sure it's not. What did that glasses girl do? Probably has something to do with props or showing off some dirt on Cotton in the middle of the play.
I wonder how the pyscho Ako will defend herself since if she does do something to this play....it will be harming not just the person her holiness deems unfit but a lot of innocent bystanders who will have their play ruined by her scheme.