The Vampire, Werewolf, and Witch

She's all three.
Hey, I'm Barrie that's me the Vampire, Werewolf, and Witch. It wasn't always like this I used to be a "normal" teenager with "normal" teenage problems.
She never had to fear anything other then when her parents died when she was about 13. Her Aunt Fin took care of her. Her aunt fell for Barrie's history teacher Shawn.
When her parent died she didn't know what to do with herself she was the only child and she felt what was lonely. Then, she meet the new kid Jackson and his older brother Josh. Their lives are different, their different. But, she didn't find out until it was to late. Now she's different.
Why did this happen to her?
How did this happen to her?
Why/How could she be all three when she didn't even know it was possible to be one?