You can worry buddy but trust she will do ok living by herself, as I mentioned in here before we left our son down South as an 18 year old in college and we moved back to Scotland, he was ok as we had friends down there plus high school buddies that followed him into college too.
A couple of years later he came back home as a long haired git but a lot more of a man if you could call it that and going out for a pint with his old man, there he is today with a son of his own and turned 45 yesterday, how life goes on.
Thats him 20 years old and free as the wind and having a drink with his old man.