Gun Shy by Lori L. Lake

While on patrol, Minnesota police officer Dez Reilly saves two women from a brutal attack. One of them, Jaylynn Savage, is immediately attracted to the taciturn cop - so much so that she joins the St. Paul Police Academy. As fate would have it, Dez is eventually assigned as Jaylynn's Field Training Officer. Having been burned in the past by getting romantically involved with another cop, Dez has a steadfast rule she has abided by for nine years: Cops are off limits. But as Jaylynn and Dez get to know one another, a strong friendship forms. Will Dez break her cardinal rule and take a chance on love with Jaylynn, or will she remain forever gun shy?