Star-Crossed series by Rachel Higginson

16 year old Eden Matthews has been in and out of private schools for the last two years. She can't seem to stop herself from closing them down. Kingsley is her last chance to finish high school and the last private school willing to accept her. She is focused on just getting through graduation until she realizes Kingsley is not like the other private schools she's been to. The students may be different, but so is she. And after meeting Kiran Kendrick, the boy who won't leave her alone and seems to be the source of all of her problems, she is suddenly in a world that seems more make-believe than reality. To top it off, she is being hunted by men who want to kill Kiran and her best friend Lilly is taken away to a foreign prison. Eden finds herself right in the middle of an ancient war, threatening everything she loves. She alone has to find a way to save her best friend and the boy who has captivated her heart. Reckless Magic is an intricate story about mystery, adventure, magic and forbidden love. Eden Matthews is an unlikely heroine determined to save the world and be with her one, true love before its too late.

Hopeless Magic is the second installment of the Star-Crossed series.   After returning home from Romania, [...] Danger seems to lurk around every corner as Eden struggles to keep her true identity a secret and protect those that she loves.[...].

Fearless Magic is the third installment of The Star-Crossed Series.

Eden Matthew's world is in shambles. [...]  Eden must pick up the pieces of her life and stand alone against the tyranny that threatens to destroy her world.[...] She has declared war and now stands on the precipice of defeat. Losing is not an option however, and Eden must find a way to overcome her emotions, fight through her pain and restore the magic to her kingdom.