I second whoever suggested calling a wildlife rehabilitator. My sister-in-law's mother-in-law was one, and I've seen her bottle feed baby squirells before -- she got me bottle (well, eye-dropper feeding) a baby bat too.
Here's a directory of wildlife rehabs in the US. Don't know how up to date it is, but it might be a good starting point: http://www.tc.umn.edu/~devo0028/contact.htm
Here's another list: http://www.southeasternoutdoors.com/...ectory-us.html
I don't know that I'd call animal control, though, unless you don't have a better option. Some probably are there because they care about animals, but there are also people that have gotten in trouble and been demoted -- they may not care so much.
Good luck with mama and babies!