So suppose a woman is walking alone along a dark road.

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59. You are mistaken

Under Florida law, when the man in your hypothetical grabbed the woman's arm, he "provoked" the confrontation and by so doing greatly limited his right to use deadly force and then claim self defense. Provocation requires the actual use of force or an actual threat of the use of force (not just a perceived threat). So in your hypothetical, the woman was entitled to mace the guy. He is only entitled to respond with force if the force used against him (1) is so great that he reasonably believes he is danger of death or great bodily harm and (2) has exhausted every reasonable means of escaping other than the use of deadly force.

In your hypothetical a jury almost certainly would conclude based on the evidence that the force used against the guy (mace) did not reasonably create a fear of death or great bodily harm and/or the guy did not exhaust every reasonable means of escaping.