Honor my Word. Rancher's Word, #5

An American historical romance about facing truth and hardship to find love. Rancher Luther Tucker would prefer to never to set foot off the Cross C Ranch in Kansas, but his grandfather insists he takes a trip to Yellowstone National Park. The only part of the trip that excites Luther is that he can sketch and paint the natural wonders he'll view. Myreta Hamman takes her deceased husband's place as a guide for Luther through Yellowstone because it's a way for her to find the money her husband hid in the park.
But she and Luther need to hurry though, because even as she tries to hide her pregnancy with her husband's old clothes, her baby is due soon. Stuck with honoring their word to others, Luther and Myreta find hard truths about themselves and each other as they face challenges in the wilderness while falling in love with each other.