I need advice from a jehovas witnesses?

I'm not witness but what to do is out. They will be 18. Its time to make their own decisions. I know they seem like babies, in your eyes, still. I have kids that age, too and sometimes you want to clunk them in the head for things they do. But the truth is, nothing you do will make a difference. They are in love and they will find their own way. My own parents were married and having children at 18, and they did ok. They will do ok too, and if it doesn't work, your daughter will be back home. You can't control their lives any longer. Its hard for a parent to let go, but i have found that unless we're talking drugs or some life threatening decision, you have to step back.