The Bear’s Nanny by Erin Havoc

Astrid wants away. Away from her suffocating city, away from her white picket fence house, away from her cheating ex-husband. But when her car breaks down in a deserted highway miles from civilization, she’s forced to stop and look for help.
Help comes in the shape of small-town Shadow Falls. Quaint houses, delicious food and kind people. It would be perfect if not for the strange happenings the town insists on hiding out of sight.
Astrid wants to stay. She just needs a job, and she’ll have the time to figure these mysteries out. And a job comes when she meets handsome Kieran.
Kieran needs help. His sister just passed away, leaving a child in his care. But his clan is made up of midlife bears, all single, all unexperienced with kids. And his nephew doesn’t like the presence of strange shifters around him. A human would be great.
That’s when he meets Astrid. A human who can calm his nephew down. But not any human.
His mate.
No matter how much his bear demands him to mate her, Kieran knows he can’t. There are rules and humans can’t learn about Shadow Falls. Besides, humans can’t be mated.
It could be simple. If he hadn’t just hired her as his nanny.