No. That's the way it's always been with the series. The mind is Japanese, but the cyborg body isn't necessarily fashioned after a Japanese appearance. She could look like anyone, basically. And the movie obviously kept all of the Japanese origin in play. *Shrugs* Doesn't stray from the source in that sense.
Sith, it seems a little sketchy either way, not entirely sure what to make of it. The initial media articles were wording it as "woman who dressed in men's clothing" which seemed a step short of living/identifying fulltime as male - especially in the "doing it to be taken more seriously in business" context they were framing it. But yeah, couldn't rustle up a full bio of Gill on google, but did find this:
For awhile, DeLucias business partner was Dante Tex Gill, an overweight Brentwood woman who dressed like a man in suits and ties, wore short hair and sideburns and preferred to be called Mr. Gill. A lesbian, Gill married Cynthia Bruno of Dallas, Texas, in Hawaii and lived with her in Pittsburgh before the couple eventually split.
Guess it all depends on whether wanting to be addressed as "Mr Gill" was strictly in work life at the massage business, or wider into her life in general. Couldn't really find anything clarifying that either way, but seems to be the impression of the pieces regarding the movie that it was more of a perceived necessity to be able to succeed in business.