Against the Odds (Serenity House #3)
Kathryn Shay

But when she comes home to recuperate from a gunshot wound, she learns that he's in danger. So Anabelle goes undercover, telling herself she's guarding Nathan for his daughter's sake. But while Anabelle's protecting Nathan from harm, nobody's protecting her from Nathan. And she's falling for him all over again!
They'd grown up at Serenity House -- a group home for girls. Now they're coming together for the first time as adults. Childhood friends who'd shared difficult times, who'd shared hopes and fears -- and perhaps most important of all...secrets.