No question, there's nothing wrong with wishing for a sexual relationship, I sure hear you.
At the same time, sounds as if she is going right along in her life without sex and that she doesn't have a problem with that.
It really is a big step. And there are people who want to be settled for good first and foremost before they have sex, and that's who they are. They want the nest all feathered first and to know that this is their partner for life.
My own heart's preference (and this is only one vote, and a minority vote at that) is wishing for the young women of this world lots of peace and space around that decision and all the time in the world to let their spontaneous feelings develop at their own natural pace.
It would be REALLY interesting to see what would happen if you never mentioned sex again. If she wants to hang out and make dinner or go birdwatching and you went along and were fine with it, that might really be interesting. My guess is that both of you would learn a lot. Maybe you would learn that you'd rather move on and find someone who is very interested in having sex right now, who knows? Maybe she would learn some things about her feelings too.
Just a thought.
I wish that both of you can find ways to nurture and support your feelings!