I beat the fighting game using only attack. Save just before the fight, constantly attack to keep her on the defense, let up for two or three seconds, she will put her guard down and get ready to attack, punch tits. Repeat six time and you win.This fighting mini-game is a complete joke you click defend and it does nothing then you click attack when the time is right also does nothing and you fight and win but zero progression.
The fights do have consequences, the dialog changes and you get to see her topless or naked depending on the fight.