| The last time i finished the fight with her, once you get to the second round, you can see the amount of vitality points she gains back. As far as i can tell (spoiler),she gets/has 1000 points, plus your pc's vitality amount. So, in a certain sense, the higher your points are, so are hers.
Not to mention, i hate that back flip she does, which seems to avoid almost every swing you make. |