The developer is intent on making her a badass marine, and not a sexualized being.
”The game industry has a history of depicting female characters inappropriately. Often, they are stylised to such a degree that they become sexual objects: While their male comrades are clothed, armed and armoured to fight, the female character is notable for the lack of any clothing at all. When female characters are granted equal protection, that protection often ignores basic laws of physics in favour of offering titillating form,” stated the dev blog.
”Her armour puts function before form,” noted Unknown Worlds, ”while adopting the science fiction, melee combat aligned design ques that have made the male marine so uniquely recognisable.”
The female update will be free - keep an eye out for her.