Awakening - The BirthRight Trilogy, #2

Be careful what you wish for... An innocuous love spell caused Catherine, Sian, Laura, and Kassandra to cross worlds in search of their soul mates. But more than love drew them to Gar'nyse. Truths are revealed and lives forever altered after an attack at the castle. An age old feud between two archaic families threatens to tear the world they've arrived in apart. As the ultimate weapons in such a war the four girls are the only hope for peace.
But one of them lies unconscious from the attack, and the destiny that awaits her when she wakes will change everything.