How does Sunny find a way to go to the Zuma Festival with Anatov?

Anatov wants to take his students to the Zuma Festival. Sunny asks Chichi to help her find a way so she can be gone an entire day and a night. Chichi dresses up and comes over to meet Sunny's family. She asks Sunny's mother if Sunny can spend the weekend at a sleepover. Sunny's mother agrees, and Sunny is able to go to the Zuma Festival.