Once in a Dragon Moon by Ophelia Bell

Ksenia has spent her whole life hiding. A legendary Sandrekar dragon, she has put her ambitions, dreams, and desires on hold for the safety of her clan, until a discovery deep in the caves she calls home leads her to the surface at last.
This brave new world calls to her warrior spirit, presenting her with the opportunity to finally become a champion and bask in the fame and glory that comes with it. But first she has to find a trainer. Fortunately, matchmaker superstar Gerri Wilder has just the man in mind.
Or men, rather—three huge, sexy shifters ready to dedicate themselves to Ksenia’s success. They’ll take care of her mind, her body, and even her heart as she embarks upon a journey to step out of the shadows of the past and stand victorious in the sun.