His Perfect Bride by Jody Hedlund

Sage Rhodes is eager to escape Manchester, England, and leave behind the pain of a broken engagement. When she’s offered the job as a lady’s maid to Augusta Lennox, who is traveling to Vancouver Island to visit her brother, Sage happily accepts the position.
Not so long ago, brilliant engineer Jackson Lennox faced a terrible tragedy during the building of a suspension bridge in the Fraser River Valley and becomes a recluse in his fine home in Victoria. When his sister and her beautiful lady’s maid arrive on his doorstep, he’s reluctant to welcome the visitors.
Organized and efficient, Sage starts to bring order not only to Jackson’s home but also to his life. Even though at first they clash, the attraction between the beauty and the beast is undeniable. Still, they do their best to ignore it. But when Augusta goes missing and they’re thrust into a dangerous adventure together, circumstances require them to pretend they’re married.