Northern Blue — Tracey Richardson

From the Back Cover: At the top of her class in the Ontario Police Academy, Miranda McCauley is an athletically gifted, intensely ambitious young woman. Angry for allowing herself to be seduced and dumped by her predatory physical training instructor, Miranda resolves not to let anything stand in the way of her career. When Miranda falls for fellow recruit Miki Paxton, their love affair ignites a firestorm of searing passion. But even Miki can't melt Miranda's ambition to be a police chief by the time she's forty, and the two part company on graduation day.

Years later, in line for a big promotion and engaged to the mayor's son, Miranda seems well on the way to achieving her goals. No one would suspect that this outstanding police woman is haunted by an emptiness that no amount of success can fill. Then Miki Transfers to Miranda's town..