Lenore Skenazy, a journalist for the NY Sun recently stirred up some conversation because of a column she wrote about letting her 9 year old son ride the subway in NYC alone. Some of the talking points coming out of that column include questions and debate about safety, numbers of crimes against children, numbers of mothers working etc.
A great place for crime statistics is the FBI's Uniform Crime Reports page. For stats on women workers, the Bureau of Labor Statistics page would be an important source, especially the BLS data on women workers page. Our Article/Databases page would be the place to go to start looking for articles on the subject.
And of course you can always take a look at her new blog, freerangekids.com!