Black Rose and Gold Queen by Shannon Mayer

Underhill has been killed and the only thing standing between all realms and utter destruction by Unbalance and his minions….
Is me.
Named as the new Mistress of Underhill, I must gather those I trust to untangle the deadly riddles or I will be left to face the darkness alone.
The politics of the earth and fae realms, the survival of all, and the remains of my tattered heart will all be decided in a final battle.
But as more and more players enter this war of realms, I realize that things are not what they seemed. If I am to see this through to the end, I must do what my mother asked of me.
Somehow I must embrace a destiny that feels impossible… and give up on a love impossible to deny.