There’s Something About Dragons by Selene Griffin

The consequences of her decisions will ripple across generations . . .

Born into the Balaurescu family of Romania, Isadora is the first of her kind in nearly half a century—a female Dragon-shifter, the most important figure in her peoples’ world—and the time has come for her to select a husband.
She allows herself no fanciful illusions. Choosing a suitor will only be the first of many decisions to shape the future of her people, and it would be a matter of diplomacy. She learned long ago to set aside her feelings in order to maintain peace, but a heart can only remain silent for so long.
One man awakens a longing in her too strong to be ignored—the only son of The Drayce family of Dragons, the man who would become her everything: Ladon Drayce.
But even as her heart chooses the man she would marry, a long-kept secret calls into question everything she has always believed to be true.

Will she stand by tradition or will deception, love, and the desire for the truth send the Dragon-world spiraling into chaos?