The Cursed Princess.

Princess Lorna has been neglected and unloved until she met her first love . However, due to the evil plot of her stepbrother , Ianfried, she ended up destroying the boy she loved . Devastated and drowning in despair by what she has done , she swears revenge even if it entails being cursed for eternity.
Now , she prove her worth to be able to inherit the kingdom with her wits to protect those she loves as well as save them from a great evil that threatens to arise

First book of The Cursed Series