Love for Christmas by Kate Hofman
Blurb: Nick and Ellie have been divorced for two years, due to the vicious machinations of Monique, his secretary. When they meet, accidentally, at a hotel in the Quebec countryside, they begin to resolve their differences. Suddenly, Monique appears. Was she there at Nick’s invitation, as she tells Ellie, or is she stalking Nick? How can Ellie be sure Nick is serious about her?