Winter Wedding by Jen Talty

Cheryl Ferguson has spent the last year researching the Royal Fairies and the magical spell that banished them from the Royal Castle before they had all been destroyed. Her three brothers, Chaz, Nico, and Drew, have all taken their rightful fated Royal Fairy mates, ensuring the new creature: Wolfairies, would be brought into the world. With the last union of Drew and Coral, Cheryl had thought their family would finally be able to relax and enjoy the newborn Wolfairies.
But she had thought wrong, and now the safety of her nieces and nephews are in her hands.