Hit her in the butt while she's down. Aim under the tail.
If you find the "special pedestal" and exhaust all the dialogue from it until you get the repeating dialogue about voices being stopped, you need to beat the boss and go through the credits back to the main menu.
You then get an Extras menu where you can play all the sex animation scenes again if you so wish. But, since the game has no save feature of any kind for the data in it, if you close the game and restart it, you'll have to unlock the menu again.