Good Girl Gone Bad

Katie is a normal teenage girl living life ordinary, living in America with her mom Karen and her dad Geoff. She had no siblings or non that she knew of. One day at school she received a calling saying she could go home early due to some devastating news. She found out her dad had died closest person to her, she became depressed and changed when she met Megan April, what happens when her behavior spins out of control and her and Megan are sent to live with her famous uncle Simon Cowell?