Soooo......why won't she go down?

So, we've been together for two years and I go 'down there' on her for hours and she doesn't return the favor. We're talked about it and she keeps saying 'I'm not talking about it and I won't do it.' When we first got together she did it and it wasn't bad. And now she just down't do it at all. I undestand that being French and Italien I'm a little harrier than msot guys, but honestly, ingrown hairs in your pub's really aren't that bad. Help me, help her, help me!