Looking for an Erotica style book where a woman learns to explore her sexuality and embraces it.

Hi guys I am new here and as a title suggests I am looking for a book erotica based for my wife. My wife is pretty prude when it comes to sex, however, she is an avid reader. Porn doesn’t really do anything for her as a sexually exploratory stuff, but I believe a book will. And as such, I am looking to gift her a book with an erotic story, preferably nothing with cheating but a lot about heroins exploratory sexual adventures in regards to personal pleasure, and pleasing of her partner.

Considering this is her first erotica book based on my knowledge, I’d like to make sure it is a well written and an interesting book. Genre doesn’t matter for she reads everything. Thank you in advance.