Friends Not Forever (Ella Diaries #7) by Meredith Costain

WARNING:
You are about to read my
UTTERLY BIGGEST SECRETS.
Can I trust you? OK then. I'm
Ella, and this is my diary.

It's Ella's big chance for a STARRING role in
this year's school play. But while Peach Parker is
busy trying to stop Ella from succeeding, Zoe ends
up winning the prize part. Zoe spends all her time
rehearsing with the new girl, Amethyst, so Ella 
tells her to go be HER new BFF! Oh no!
Will Ella and Zoe patch up their FRIENDSHIP
in time to save the play?