Carrie Jones 
Endure [EPUB ebook] 

Zara is back from Valhalla after successfully rescuing Nick. Bedford needs their best warrior now more than ever, as the evil pixie regime is causing mass destruction and chaos everywhere. Though Nick’s job is clear, Zara’s role is a lot more uncertain. She’s not just fighting for her friends — she’s also a pixie queen. And to align her team of pixies with the humans she loves so much will not be as easy as she hopes. Especially since she can’t even reconcile her growing feelings for her pixie king . . .