"Oh, hello sir," she said in an adorably husky voice. "Ever wanted to try riding a horse? We're offering some free horse rides today only, if you'd be so inclined..."
You never know how to respond to her cheesy lines like these. Roleplay was her kink, not really yours so much. But you do your best anyway, because you don't want to ruin the mood for her. Besides, it ends in sex on the beach anyway, the least you can do is indulge her a little.