Rescue Me by Sydney Allan

She's used to doing all the rescuing. But love has a way of changing everything. Hailey Jensen is in the rescue business--animal rescue--and more than willing to risk life and limb for fowl or fauna. Just when life couldn't get better, her world crumbles. Her identical twin has cancer, and her marine rescue is failing before it even gets started. Lacking coping skills, she takes refuge behind sarcasm and solitude. But, thanks to Dr. Rainer Hartmann, her sister's friend and a man who mistakes overbearing control for helping, she finds herself on the opposite end of the control stick. A wildly independent woman, Hailey fights with the determination of a bulldog as Rainer struggles to drag her out of despair...and into his arms.