- Stop telling women what to do. They're members of your community, so presumably they are grown-ass adults. They've lived their life and determined the best way to exist in it. Back off.
- Stop catty woman-on-woman hate. The things in this list don't directly affect you. Just because you are a woman doesn't mean you know how to be the best version of one.
- Stop caring so deeply about shallow things that don't directly affect you. Don't like her outfit? Don't wear it. Don't like her make up and hair? Do your hair and make up differently. Trust me, people will still like you (and her) anyway.
- Quit with the shaming. Is she she working out in a g-string and pasties? No? Then she's probably not a health hazard.
- Her workout intensity (or lack thereof) doesn't affect your fitness. She's not working hard enough for your taste? That isn't going to affect how hard you or someone else pushes. Or is it that your victory over her as the harder worker means nothing if she doesn't legitimately pursue the rhabdo.
Look. She's paying a membership too. Presumably CrossFit offers other benefits, such as community, and who are we to determine where the value lies for her? As with any choices that someone makes that don't directly affect the quality of your own life and the pursuit of your own goals, you should probably just leave it be.