Oli Sykes Has A Little Sister?!

Rosaline Sykes has been placed in the care of her older brother, Oliver Sykes. She hasn't seen him in over ten years. He completely forgot that he even had a sister until child services called him to come claim her. The thing is.....she has a secret. She scared to tell him because she feels he'll give her up if he finds out. What happens when he finds out?