Little Lady's my sister(one direction)

Mary was Harry's sister.She was abandoned when she turned eleven by the Styles' family.About a week after being abandoned she finds herself taken in by a woman named Mandy. A month after being adopted she moves to England to further expand her education. What her new mom doesn't know is that the plan her brother Ryan has doesn't match hers.She doesn't know Ryan's a pimp.She has no idea who she just sent her new daughter to or what she's just done.Now Mary's an underage prostitute.When Harry and Mary meet again Harry doesn't even recognize her but that's a good thing.Soon she starts dating a one direction member. No one in one direction knows how old she is or even her full name until a nurse let's it slip.All they know is what caused her to get in this mess and some of her background.The heroine makes her look older than she is. She looks eighteen when she's only sixteen. Things get even stranger when they find out she's Simon Cowell's niece by adoption. What will happen to this girl who's never known a good life?