Casey by Sherry Foster

She wanted a shifter mate.
She got Dacron instead.

With a few words, he destroyed everything she thought she knew about the Clans.
Casey spent years looking for the perfect mate to help her break the curse on the shifters. She didn’t expect her lifelong journey to end with someone else opening the book. But before she can figure out what to do with her life, things take an unexpected twist.
Dacron doesn’t want a mate at all, especially not one from some backwater planet in a far distant solar system. His rage at seeing Casey for the first time shocks everyone, but the information he has on her people could destroy the world.
Now Casey has to stay alive long enough to decide how she wants to live her life, and with Dacron calling for her death, that may be harder than expected.
With her world shattered around her and an uncertain future, she has to make a decision that could cost her more than she expects.