comments:
majeric posted on r/lgbt2w
How about starting with giving her this book so that you can go through it together and talk about what you might find interesting or appealing. I mean you might also consider that your girlfriend is on the asexual spectrum and while the idea of sex sounds appealing the actual act is less so. She might also be dealing with social shame. It often comes out in sex. Patience and communication are key, of course.