Well, it'd be ideal if everyone were pansexual, but unfortunately it is not so. A lot of people are heterosexual, or otherwise not attracted to one gender or another... There's nothing to do about that sadly, either she realizes she's attracted to you anyways or she simply isn't, in which case you're out of luck.
It seems odd, though, that you identify yourself by how you feel (i.e. as a woman) but expect her to accept you by your physical qualities (i.e. 'male parts') - that's inconsistent. You want to live as and be seen as a woman, and your spouse is doing exactly that - so why do you expect her to treat you as a man as far as being in a relationship with you goes? You can't have your cake and eat it too. As far as I'm concerned, she is simply treating you as the gender you wish to be treated as. Which is great, not every trans person is fortunate enough to have their family accept their "new" gender identity!
I mean, think about it. Are you only attracted to women? If so, would you date someone who is physically still female, but has a male identity and may or may not wish to transition fully at some point in the future for all you know?