This may be a little picky, but this statement just doesn't make sense: :He is fundamentally a rebel—She will not be happy unless" Where did the she come from?
"She" probably came from some attempt at political correctness. There's been a rise in recent decades to use "she" when speaking about an unspecified person. Historically, it was common to use "he" for that task. Unfortunately english doesn't have a gender-neutral pronoun and until/if one becomes accepted this will probably continue to be a confusing issue... edit: http://en.wikipedia.org/wiki/Gender-neutral_pronoun
Yes it does: "they".