The Gemma Doyle Trilogy

[Lys Attack]

I really didn't know where to put this, because these books are a mix of fantasy, supernatural, romance and historical (sorta) aspects. I think they are great books! I'm currently in the middle of the first one, A Great and Terrible Beauty.
They are definitely Teen Girl books, I would say for ages 14 and up.

Here's a link to a site about the books:
www.randomhouse.com/teens/greatbeauty/