Stolen Goblin Bride by Emma Hamm

When a mortal girl steals a necklace from a Goblin, there will be a price to pay…
Esther knows the rules. Don’t talk to the goblins. Don’t look at the goblins. Above all else, don’t buy or trade with the goblins.
Then, one day before market, she sees a young rat faced boy selling a necklace that looks eerily like her mother’s, what’s a young girl to do? Of course she tries to buy it, but he won’t sell it to her. So she steals it because it’s her mother’s necklace.
Lux knows the rules. He’s a jeweler and he can sell his wares to those who want to faithfully buy them. Something doesn’t feel right about selling this particular piece to the beautiful young woman who immediately steals his heart. So he doesn’t.
But when he realizes the mortal girl stole from him, he’s forced to enact magic that can’t be unwritten. Stealing from a goblin always has a price.