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?
Where did the she come from?
Yes it does: "they".
English does not have a unique[1], singular, gender-neutral pronoun.
[1] unambiguous
In terms of being understandable and elegant, the singular "they" is probably the best English can do. Unfortunately, it's not widely accepted because it "sounds" uneducated, despite being the current best solution to the problem. Gender-neutral neologisms, like Spivak pronouns [http://en.wikipedia.org/wiki/Spivak_pronoun], are not commonly understood, while constructs like "he/she" or randomly alternating between generic "he" and generic "she" as in the OP is inelegant and confusing (hence this whole thread).
[1] I'm sure you could construct a contrived example.
Written language has more legitimate uses than completely formed sentences. Pronouns can be troublesome enough, figuring out the antecedent, without requiring yet more context analysis.