Trying to remember a book’s title

Hey folks, hope you can help. I read this book years ago (late 90s, very early 2000s). It was an erotic story with native American characters, told from the female PoV. The main girl basically gives these phenomenal handjobs and gets kidnapped by the villain and his wife, who is very jealous of her talent, and wants to learn how to do it. It has three or four ‘sex’ (handjob?) scenes in it. The cover was, as I recall, a native American couple on a rock looking at the sky. Can anyone help identify it? Thanks!

Source: reddit.com/r/eroticliterature/comments/lsxbfd/trying_to_remember_a_books_title