Try to steal her key and wen it say's "it's to dangerous to continiu" press wait and repet again and again unthil it say's she's holding it thithly" then do ero attack 2 times than press wait unthill the middle of her health beffore her cum  try again to steal her key and wen it say's "it's to dangerous to continiu" press wait and repet again and again unthil it's yours then leave!

After that you can just take the key from the robo arm's  than wen you fight mille she will run in the x room but make sure after the fight you drink a ale to get all your hp back dan fight her again than you can do whatever you want with her (torture her)