Execute her (an eye for an eye). Cut her hands off (she won't be able to drive again).
Thank goodness the vigilante crowd have not replaced our Judicial system which is a cornerstone of civilization . NOTHING will bring the pedestrian back and there are many potential lives ruined which harsh vengeance will do nothing to ameliorate . The press should not be plucking the heart strings to whip up vengeance.  Our laws many not be perfect and at times the Judiciary benefit from criticism but in my opinion deserve more of our support than reactive rage. Surely this individual will not reoffend.  Does Deterrence work?