Positioning decision: pick the “engine” and write the metadata to match
If the central change is her identity, grief recovery, midlife pivot, or rebuilding after a rupture, position as women’s fiction proper. If a couple’s emotional arc and satisfying romantic payoff are what the reader remembers first, position closer to romantic women’s fiction or romance-adjacent categories. Practical rule for your back cover and keywords: do not lead with “love story” tropes if the book is really about transformation; do not lead with “healing” language if the couple’s arc resolves the story. Your goal is to reduce review risk caused by tone mismatch, since this audience is actively choosing for book club discussion and “this will feel like my life” resonance.