1. Why do you think Stacey insists that no one tell anyone about how Cassie is dealing with Lillian Jean?

Stacey knows that his sister has a plan to get Lillie Jean off her back. He doesn't want anyone interfering because he understands how she feels..... that, and it would get her into trouble.

“Naw you ain’t,” said Stacey. There was a shocked silence as all heads turned to him. “This here thing’s between Cassie and Lillian Jean and ain’t nobody telling nobody nothin’ ’bout this.”