Una expresses her curiosity about Mrs. Ford in "Rainbow Valley" by L.M. Montgomery, indicating her intrigue and wonderment about the character. This reflects Una's youthful innocence and her desire to understand the people around her, showcasing the theme of childhood exploration.

The mention of Mrs. Ford not only highlights Una's inquisitiveness but also serves as a gateway to explore the relationships and dynamics between characters in the story. This inquiry into Mrs. Ford's identity opens up opportunities for further character development and interactions within the narrative, enriching the overall storytelling experience.