We're all sexually unique! Her interest in women doesn't mean she wont apreciate what a great guy you are! I think you very much like this girl and once you've got over the initial shock of her sexuality, you'll have a great relationship!

I think whats important in a relationship is that your girl is good natured! If she doesn't seem to hold any affection for you, and doesn't care what your needs and wants are in this life...that's when your in a bad relationship I'd say! So my advice is stay in this relationship! Just let things fly! See how it goes!