Joshua by Kathi S. Barton

Josh had taken a month off from his Realtor job to get the construction finished on his house, but he was leaning toward it being a permanent vacation. He still liked selling houses, but something was missing. It didn’t excite him anymore and he was tired of the rat race.
All Carter wanted was to get a job and start her life over again. She had just spent the last ten years in prison for a crime she didn’t commit, and that made finding a job difficult, if not down right impossible. She didn’t want to go back to the halfway house, but things weren’t looking good.

Ollie Whitfield took an instant liking to the young woman and her sister, Rachel. He’d make sure his grandson gave her a job in the new greenhouse he was opening up. There was no since in her beating the pavement for a dead-end job when he had one for her. He just had to convince her of that. She had some dad-blamed notion in her head that she’d bring danger to the family.
Josh’s grandda had already told him of the scary things the woman could do, and he was worried that Carter and her sister might be taking advantage of an old man. But when Josh walked behind her at the dinner table and caught her scent, he was floored. He had found his mate and neither of them were prepared for it.

Carter knew he was a shifter, but the things she could do would get them all killed, and she wouldn’t allow that. She would somehow convince him that this mate thing was a bad idea.