Unfortunately, if a woman blocks you it's because she isn't attracted enough to come into your frame (and she gets pissed off that you aren't complying to her frame).
Women make rules for betas, and break rules for alphas.
I'm not saying that you and
@derby1 are beta. Just in that particular girl's subjective opinion, you weren't alpha enough for her to break her rules and step into your frame. She was trying to impose her own frame of "bf/gf dynamics" or whatever. You didn't comply to her plan to turn you into an orbiter, so she blocked.