Without a marriage license, the disposition of assets after one or both of them dies will be done under the terms of any contracts they have, or under court oversight (if they have none).
I am not sure how they have documented their things but she wants all her stuff to go to her kids not to his nieces and nephew. She works at local court house so hopefully got their ducks in a row. She will keep her last name, but they call themselves married. Thanks for your comments. Very helpful to me.