Redemption Road by Liliana Hart

Zoe Green is a new woman. She's got a new haircut, freshly signed divorce papers, and a new dog. The peace and quiet of Laurel Valley is exactly what she's looking for to start fresh. But peace and quiet is the last thing she gets when she ends up with a concussion and on Dr. Colt O'Hara's exam table.
Colt thinks Zoe is a disaster waiting to happen. She's wound so tight the lump on her head is the least of her worries. But beneath the tough exterior is a woman who's experienced a lifetime of hurt. Her need of love and family is something he can give her. If she can learn to trust again.