Bravo Sierra. You are being willfully ignorant because you would have to admit you are wrong. You are the custodian of her Rights until she is 18. Period. You CANNOT have sex with your daughter until then. She can consent to have sex with as many other people she wants, but not you.
Get over it and leave your daughter alone.
There is no such thing in law as a "custodian of rights". She is of the age of consent.