The Draqon’s Queen by Pearl Foxx

She just wants time to heal her broken heart. Instead, she finds her true calling astride a sexy, grizzled Draqon with fire-colored wings.
Niva returned to Kladuu for the Alpha of Clan Vilka, but when he took another mate, her heart shattered. To pick up the pieces, she travels to the Draqons’ hive with their menacing, gruff leader. But behind his black eyes lies the one man who may be able to put her pieces back together.
Years ago, Zayd lost his Queen in a battle that left him scarred and full of self-loathing. But when a beautiful young human comes to live at his hive high in the snow-capped mountains on Kladuu, his heart begins to thaw. Flying in his Draqon form has always been about harnessing his rage, but with Niva on his back, he finds a freedom he never felt, even with his Queen.
When Kladuu is threatened, Zayd must face his fear over Niva’s safety and accept her as his rider and new Queen, or it might mean the end of the planet they both call home.