I think it depends on what you plan on doing with her in the end, if you plan on eating her show her as market, if your plan is to keep her, show her as a breeding heifer. I only say that because of the way I would feed her for each. For market I would feed like a steer and tweak it as I went, for breeding more fiber and protein in her diet, volume but not a lot of fat. The balancing act of being competitive but still having a hiefer that will breed and raise a calf is the hard part.IMO
She's good either way, to me she looks like she will look more feminine as she matures.