If I only knew

Mike and his sister Ashley live a perfect life or so it seems. Mike is the varsity quarter back on his high school football team and his sister is captain of the varsity cheerleader team. Things start to go downward for Ashley and Mike when Mikes girlfriend hates Ashley and sends Ashley to the hospital. What did Mikes girlfriend do that sent Ashly to the hospital? Mike has a decision to make should he stay with the love of his life or stand up for what's right. (This book is not yet done and is in Mikes perspective)