Briar Rose by Jana Oliver
Briar believes in fairy tales, in happily ever after and in charming princes that will sweep her of her feet. What she doesn't believe in is curses in real life – especially not on her. Well, she's wrong. When the clock strikes midnight on her sixteenth birthday, she'll die – but she has a chance to fight the curse, if she's just strong enough. Trapped in a world of her own imagination twisted by the curse, Briar finds herself in a dark tale of Sleeping Beauty: Only that the prince is replaced through an evil magician who rules the kingdom and enslaves its inhabitants. While Briar's best friend, Reena, and her family's enemy Josh prepare themselves to make a deal with the devil to come and help her, Briar has to find out whom to trust... and how to help the inhabitants. Because this is her curse, her task – if she fails, she'll die.