The Shifter’s Choice by R. A. Boyd

A fallen angel’s inner beast falls for a woman who has the power to give them life or drive them to a century long sleep.
Andi Wolford knows she tends to attack first and ask questions later. The last twenty years have been rough! She wishes everyone would stop asking her why she looks so troubled. You’d be troubled too if you thought you were going to die an early death.
Cole Dodson was ready to be put down for the next century and sleep off the unbearable boredom that was driving him mad. He’d lived too long, seen too much. And now, he was tired. Until he runs into his Alpha’s sister, Andi: the feisty human who has his sleeping saber-tooth fighting Cole to hold on just a little longer.
Cole and Andi run hot to cold, sweet to sour, fuming ire to pillow-soft cuddles. Neither one of them knows what to expect when they see each other, but it sure is fun to watch. The chemistry between them is explosive, but is it worth the danger Andi would be inviting into her life if she stays within the Ghost shifter community?
With a foe that threatens to destroy the Ghost shifters, Cole and Andi must decide whether their budding relationship is worth the trouble, or if Cole should be put down and Andi should move on with her life.