Girl, Forsaken by Graceley Knox

Every betrayal begins with trust . . .

A lot has happened since the brutal attack that transformed Sasha Keleterina into one of the undead. She’s left Arsen and the Draugur vampires behind but dealing with Niko and his advances almost sends her crawling back. Though Arsen continues to beg for her forgiveness, she’s still too raw from his betrayal to be near him.
When Jackson learns the truth about Sasha’s attack, Sasha is once again conflicted about where her loyalties lie and who her true friends are. The clock is ticking, and with an all-out war on the horizon, Sasha desperately fights to find a cure to save not just the vampires . . . but herself.

Who knew being a vampire would be so tough?