Crescent Wolves (The Originals, Book One)
Mikayla was separated from her parents and sister as an infant, thanks to the kindness of heart from the one and only Marcel Gerard, who has a thing about babies and children. Mikayla went home to find her family in New Orleans, where she triggered the werewolf curse and fell prey to the Crescent Moon Wolf curse, of being a wolf for every day of the month besides the full moon, where she would become human for that one night.
When Hayley returns to town, Mikayla realizes who she is and will stop at nothing to make sure that she and her niece would be safe at all costs.
And Hayley is trying just as hard to find out who she is.