Never Too Late by Susan L. Tuttle

Once, her art brought her fame. This time will it bring her love?
Widowed homemaker Rachael Stark isn’t quite sure what comes after her only child leaves for college. To fill her suddenly quiet hours and scrawny bank account, she needs a job. But painful memories prevent her from resurrecting her former art career, and “motherhood” isn’t much of a résumé. When her best friend needs help recovering from a gunshot wound that occurred in the line of duty, she is there. Finally, someone to take care of.
Evan Wayne won’t let his injury keep him from being a police officer. His dedication to protect the innocent stems from the guilt he carries over having failed his childhood friend. What he needs now is to recover and get back on the streets. Instead, he’s handed a myriad of light-duty tasks by his captain—one of which involves heading up the department’s entry into the town’s annual mural contest. He’s not an artist, but he definitely knows one. And he’ll take any excuse to spend more time with her.
When Rachael agrees to paint for Evan, she never expects to also be drawn into finding answers for the mother of a missing child. As the two friends work side by side on the mural and the case, their feelings move beyond friendship. But with Evan unwilling to leave his dangerous job, and Rachael unwilling to risk another loss of a loved one, their fears may paint over the promise of a beautiful future together.