And, try not to fret about the things she doesn't want to share with you. Sometimes people just want to let something pass, and talking about it just doesn't facilitate that.
And if you're fretting about it, maybe the reason is that you suspect that she's not feeling too good about you. Even if you're right, does that mean it would be better if she "aired it out?"
Not necessarily. A lot of DBers go dark (or some shade thereof) so they can get a positive "aura" back into their R. Again, it's better sometimes to let those negative feeling pass, rather than "airing them out" and letting them take on a life of their own.