Tyler, you've got a series of recent posts all showing a degree of paranoia over this relationship on your part. Forget what she's doing or not doing .....what is causing you to second guess each and every thing which happens in the relationship?
Relationships aren't meant to be this complicated.
Oh and if you want sex, take her into the bedroom when the parents are out. It's not rocket science.
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.