I would also like to add something here. There are so many things that can affect a person's sex drive. Hormone levels, repression from upbringing/religion, repression from shame of past experiences, and in your case I wonder if there are any issues with your partner embracing her sexuality entirely so that she can be out and free of mental chains and barriers to lovemaking. Do you have any insight with regard to your partner's past and her viewpoints about sexuality?
Also, how is your relationship outside of the bedroom? Is it flirtatious and sexually charged? Or, are you more like friendly roommates? In this area, you can guide your half of the relationship to create a tone of desire and passion... It is up to her to partake in what you put out there (with no expectations,) and then decide to participate in that. I hope that makes sense.
I think that DanceQueen is going to be of particular value here, given her experience and practical expertise.
I look forward to knowing you better. Again, welcome.