Her Honor-Bound Lawman (Silhouette Romance #1480) (Storkville, USA)

the long version

Rugged, hardworking Sheriff Tucker Malone is as upright as the weather vane on Gertie Anderson's roof! So who better to shelter sweet, virginal Emma -- the amnesiac who surfaced in Storkville without a nickel or last name -- while he investigates her past? Still, the broad-shouldered lawman seems mighty distracted since Emma started spending nights. And he gets downright testy when other males come near Emma and the angelic abandoned twins she's taken under her wing. For a man who's sworn off women and family, Tucker sure is protective of his little brood. And we townsfolk suspect the sheriff hasn't a clue...that Emma and her charges have stolen his heart!