In terms of style, maybe a contemporary realistic fiction with some introspective elements. Use descriptive language to set scenes and convey emotions. Show their chemistry through interactions rather than just dialogue.
Conflict could come from external pressures, like family disapproval or societal judgment, but also internal struggles such as the older woman dealing with her own past regrets or the younger woman exploring her identity. It's important to balance the "naughty" element without making the story feel exploitative. Instead, focus on mutual consent, emotional depth, and growth.
Possible themes: love transcending age, the importance of self-discovery and acceptance, resilience in the face of external judgment, and the beauty of mature relationships. The title "better" suggests that their relationship improves over time, emphasizing growth and positive development.
Modern-day Portland, Oregon (2015), a vibrant, LGBTQ+-friendly city, provides a backdrop of acceptance while still holding nuanced challenges for a mature age-gap relationship.
I need to make sure the story isn't too cliché. Avoid making the older woman a strict seductress or the younger woman a passive love interest. Both should have active roles and personal growth. Maybe the younger woman challenges the older one to try new things, breaking out of her comfort zone.