Darkhaven (The Darkhaven Novels, Book 1)

Ayla Nightshade never wanted to rule Darkhaven.

Yet her half-brother Myrren hasn't inherited the family's ability to shapeshift, so their father, Florentyn, forces Ayla to take over as heir to the throne.

When Ayla is accused of Florentyn's brutal murder only Myrren believes her innocent and aids her escape. A fugitive from her own guard, Ayla must now fight to clear her name if she is ever to wear the crown she never wanted and be allowed to return to the home she has always loved.
But does something more sinister than the power to shapeshift lie at the heart of the Nightshade family line?