Shifter’s Eden by Tia Didmon

What is the price for love?
Fate left her in the hands of one of the worst criminals in the world. She has worked for him for years, completing every mission in order to protect the one she loves. Her next target is Brock Cascade, her final assignment. Her name is Jane Eden but to the underbelly of society she is the Red Widow.
Brock Cascade never expected his latest deal to include his mate. When Jane, the frigid red-haired beauty arrives to compete the transaction, he vows that nothing will stop him from taking what’s his, especially the woman sent to betray him.