There are an alarming number of women who get to that age and older without having an orgasm. They might think they have.

It's good that she has admitted to you that she has never had one. It's a bit embarrassing for women to admit too.

I used to only orgasm like once a year during sex with my husband. Now it's almost everytime. That's because I let go of all my inhibitions one day and never looked back.

Maybe she just feels ashamed of feeling like a dirty girl turns her on. Maybe talk to her and ask if that's it.