“If it weren’t for her plump breasts, most opponents would probably mistake her for a man. Therefore she dressed daringly, exposing most of her flesh. Her skin was swarthy, with a strange design inked on her left cheek. An informed observer would recognize the design as a warding spell of the Arido hill tribes.”
That settles the question of why competent women in fantasy show so much skin: they’re feminist pioneers, working twice as hard to prove they’re just as good as men!
[this message brought to you by my attempt to figure out the word 呪払い, which apparently should be read as “noroibarai”; it’s not explained anywhere, but is in common use in the online fantasy community to refer to warding magic. See also here.]