To Steal A Bride by Daniela A. Mera

People travel to the Enduar Mountains for two reasons: death or diamonds. Estela isn’t supposed to find love.

As a slave to the Giant King, Estela’s life is an endless torment. Her sole hope is to escape with her half-brother and find refuge among the elves.
Teo, the Troll King, is desperate. His people are dying, and he’s running out of options. When the giants come for diamonds, Teo’s crystal sings.
The slave is the king’s mate, and with her comes a solution to save his people.

Even after the king steals her from her masters, Estela’s one desire is to flee. She doesn’t see herself as the savior of the Enduar Trolls. She would rather die than be their queen, and, by extension, his mate.

Any amount of time with him is dangerous. His stolen glances and longing stares won’t make her forget the truth—if she stays, she’ll still be caged.