Getting Back At The Queen Of Hearts

People say Kaya Torres is the luckiest girl in Middleton High School. Why? Her sister, that's why.
Ever since Kaya was little, she was paid no attention to because her sister was always stealing the spotlight. At school, in public and in front of her parents, Kaya's sister always act innocent and be the most perfect girl in the world. But to Kaya, she's a living hell.
17 year old Kaya is done with being ordered around by her sister and plans on taking revenge on her.
What revenge is she planning on to do?
Stealing back the boy she deserves from her sister, of course.