What great advice.This is something I have had to learn the hard way! When your child was in your care, you led by example and teachings. You did your best while she was in your care. You taught her everything you could. Now, it is her responsibility to use what you have taught her.
I know this is hard, to sit back and let your child make mistakes and take the wrong path, but it is something you have to do. Love her, be there for her, IF she asks for advice, give it lovingly and non-judgementally. And give her and the baby to God. Place them in His hands and trust Him to woo her and guide her in life. Pray for her everyday. Keep being a role model for her. She is still watching, even tho you may not be able to see it.