A Dad for Her Twins

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.
The Cowboy's New Family  

Widow Abby McDonald is pregnant with twins, suddenly homeless and has nowhere to go. When her late husband's army buddy offers her a temporary haven at his family ranch in Buffalo Gap, Abby accepts the handsome cowboy's hospitality. She knows that Cade Lebret, an honorable man with a complicated life on the Double L, is just "doing the right thing." But when a needy foster child joins their makeshift family, Abby begins to see what a kind, loving father figure Cade is. Suddenly she's dreaming of making the Lebret family ranch her home forever. 

Family Ties: Bundles of joy bring couples together.