Bound to the Dragon: A Dragon Shifter Romance (Feral Dragon Book 2) - Feral Dragon, #2

Thanks to Emma and her new friends, Edmond is freed from his curse, but there remains two other dragon lords trapped inside their realms. Together the pair set off on a journey to free one of them, the dragon lord Balmore, ruler of the rocky land of the Pitted Mountains. Trouble comes early as they travel across the stony hills to the southwest. Great is their surprise when they discover not a desolate realm, but a thriving community.
The people have been lured to the capital of the realm by the promise of great riches. Unfortunately, danger lurks beneath the pact, and beneath the earth. The extensive mining has operation awakened an old secret, one which threatens more than just their livelihoods, but their very lives. To make matters even more complicated, Emma's unique aura attracts the attention of more than just her handsome companion.
She soon learns that dragons aren't the only ones lured in by her sensual scent, and her new suitors have some mischievous plans for her.