All I can offer is my sympathy. I'm afraid I don't have much expertise in this area. There are a few women on this site that are very knowledgeable... hopefully one will see the post and respond.

In the meantime do all of the research you can to find out what support is out there for her-housing, food, formula, diapers, medical. Be pesky. Even if she has not been abused a woman's shelter might be able to give you some advice and a direction to turn. Wishing her all the best. She's lucky to have your support!