My sisters guardian

Kayla and her little sister Cara lost their mom on the day Cara was born. Now they are living with their dad who abuses them almost everyday. Kayla just wants her little sister to be safe so when Kayla turns 18 she is hoping to turn her dad in and change everything.
Kayla is very shy and pushed around at school. She has no friends and sits alone at lunch. Kyle Parker a well known guy at school decides to help Kayla out and things may get better or worst.