Sullivan’s Promise by Joan Johnston

Facing the unexpected consequences of a life-altering night of passion with a cowboy she met in a Jackson Hole bar, and with her life committed to protecting endangered species, Victoria Grayhawk does what she believes is the right thing. She hunts down the cowboy, seeking his agreement that their baby should be adopted by a loving family.

Montana rancher Ryan Sullivan has no intention of giving away his own flesh and blood, and takes their son to raise himself. When Vick realizes what a horrible mistake she’s made, and wants back into their child’s life, Rye remains inflexible—because once trust is lost there are no second chances—until an attack by one of the grizzlies Vick has spent her life protecting changes everything and Rye learns that sometimes love can heal all wounds.