If she married it, then it may be harder to find her. FamilySearch.org --
https://familysearch.org/ -- is run by the Mormon church but it has a lot of info about folks who are not Mormon. Rootsweb (
http://rootsweb.ancestry.com/ ) is run by Ancestry but if you are careful to stay on Rootsweb it is free. If you know the area where she may live, some states have their marriages/birth information online in a searchable form.