Uhhh I pick clothes I like. the most recent maru sketch i got was just one of Momo Ayase's outfits in Dandadan. For her canon outfit, I'll be real I kinda improvised. I wanted the like. silhouette of a western-style duster but with her abs out, so it's got the cropped vest & torn shirt, and then there's supposed to be this like. Waist-cloak thingy. and for the beach Colt fit I remembered seeing a cute checkered bikini w/ flames on tumblr, like, years ago, so I went looking for it again and am very surprised I found it.
As for style consultancy, I don't think I can do what I do for myself for other people, sadly. Sorry. You gotta know what you want and seek it out. And if you can't find it, make it.

This may or may not be surprising, but it's not my thing. I don't mind getting like, jokingly thirsted after for being a sweaty butch, but it doesn't do anything for me. If anything it's actually a turnoff cause I always feel super gross when I get sweaty, so I can't really see it as hot when other people are either. I do like when someone is wet n shiny, say like showering or bathing or getting like, an oil massage, et cetera, just not. Sweaty.
As for musk... I'm just not a smells girl tbh. I moreso like the feel of things and the taste of things, but not so much the smell of things. It is probably the most easily offended of my five senses. Also it's fucking impossible to be sexy in the heat if I'm sweating to death in the Texas sun I don't want no one touching me for shit!

No worries abt it being a serious one, sometimes you gotta ask for help. I would start this the gold standard way you should start approaching every interpersonal problem like this and try to talk to her abt it first. It may be very tempting to just drop someone over the way they've been acting, especially if you think they'd be unwilling to reconsider their behavior like you've implied, but in the end it's not a healthy way to approach relationships with other people.
Tell them about how their criticisms have been particularly hurtful, and about how you didn't [perhaps couldn't] know that whatever your mistakes were in the game were mistakes when you did it, so it's not really fair to be mean to you about it.
At this point my answer to your question depends on how she responds. If she does actually apologize for her behavior and at least attempt to do better in the future, give her a chance, y'know? But if she responds in kind with the way you've described her, it may be better for you to find a way to distance yourself.
It sounds as if she might be in your tabletop game? If not just privy to the details. If she is, you should also talk to whoever runs/hosts the games about it, see if they're willing to stand up for you, privately or otherwise. If the host is unwilling to do that for you, you may want to consider finding a new group, as it is the host's responsibility to ensure everyone is enjoying themselves in a tabletop setting. If the host tells you something to the effect of get over it, find a new group. If she's the host, find a new group.
I'm sorry that you're having to deal with that kinda bs, anon. Be brave. Best of luck.