(finnaly brought game) duno if im stuck or missing something but have her in the s&m room done alot of stuff to her but is there anyway of finishing the story?

In the stories menu you can check if you have got all the save-points. If you have then you have finished a story.

If you have finished both stories then the 'fast sex' option is unlocked.

The stories do however have an open ending that allows you to visit the girls again.