Mercy’s Destiny by A.M. Hardin

One enemy after Mercy down, even more to go.
After finding out why she’s been attacked for nearly her whole life for simply existing, Mercy doesn’t know whether to believe it or not.
She discovers yet more lies, more secrets. Along with those secrets and lies, comes new faces, new friends, and even worse; new enemies.
When someone close to her protectors betrays them, Mercy comes to realize that maybe her destiny might just be written in stone after all.