Single parenthood is not her only option. Has she entertained the notion of adoption? That some family out there, who's in a better position to care for her child, would love a baby. And she could get her life together.
http://maternity-home.adoption.com/
Has she had any pre-natal care at all?
Found this on a link from a site that thinks adoption is the worst thing int he world - that everyone shoudl keep their babies -- but maybe some of the resources here will help..(it includes places to stay as well)
http://www.keepyourbaby.com/parenting_resources_.html