The reference to Her is especially relevant, since in the Halo series Cortana was clearly designed for sex appeal, and romantic tension between Master Chief (the player character) and Cortana was strongly implied.
Not being familiar with the Halo games, I did an image search for "Cortana" -- and while not exactly NSFW, I did immediately close the window, haha:
https://www.google.com/search?q=cortana&client=safari&rls=en...