The Chosen one

Ava Collins was your typical teenage girl. That was until her parents died and her brother Jason and her had to go live at the house of secrets. Which is a school for paranormals but when she begins to get the marks and the tattoos she soon realizes that she is anything but normal. Her brother Jason soon learns that he is normal and him and his sister have to part ways. But will Ava stay? or Will she go and fight her transformation in order to be with her only family left?