The Baby Barter by Patty Smith Hall

Sheriff Mack Worthington isn't sure army nurse Thea Miller--whose actions once hurt him badly--is committed to raising her late sister's baby. And a judge may never approve a single-parent adoption for either of them. But what if they got married? It would be a marriage in name only. Could their pretend family become the real one they've both been longing for?

The Marriage Bargain by Angel Moore

Lily Warren's new hat shop is her ticket to self-reliance. But when her landlord, Edward Stone, bursts into her rooms to rescue her from a fire, Lily's reputation is tarnished. With an orphaned niece who needs a mother, Edward believes a marriage of convenience is the answer to his and Lily's problems. Until he develops feelings for his new wife...