Power of Five by Alex Lidell

Four elite fae warriors. One mortal female. A magical bond they can’t allow—or resist.

Orphaned and sold to a harsh master, Lera’s life is about mucking stalls, avoiding her master’s advances, and steering clear of the mystical forest separating the mortal and fae worlds. Only fools venture into the immortal realms, and only dark rumors come out… Until four powerful fae warriors appear at Lera’s barn.