Showing Bound (The Preston Vampire Series) (Volume 1) by Amanda K. Dudley-Penn

Marissa Dalene has been sheltered by her loving family for most of her life. Imagine her surprise when she finds herself the object of interest for two vampires... Nicolas who loves her and will do anything to save her from bringing her into the darkness in which he lives and Bernard, who has been ordered to kill her and fights his own battle to save her even if that means turning her into a monster like himself. In this battle of wills Marissa finds that she may have to stand alone and make the decision herself to save not only her life but the lives of everyone she loves.