Between ~ Teen Wolf ~ Void Stiles/Theo Raeken

Sarah McCall is Scott McCall's sister, or Scott is also known at the True Alpha.
She is a human and doesn't know about the supernatural world yet.
She is a sweet and kind girl, but she doesn't always make the best decisions, especially when it comes to love.
She got kidnapped by the dark spirit that possessed her friend Stiles, The Nogitsune, or also called Void, but ended up falling in love with him, but then he got defeated and killed by her brother, Scott McCall... or was he?
2 years later, she met Theo Raeken. He seemed like the perfect guy at first, but then turned out not to be so perfect later on...
What will she do once Theo betrays her and the other? And what if someone she thought she would never see again comes back?
And who will she choose?