Here's a link to FL child support establishment:
http://www.myflorida.com/dor/childsupport/
Let me give you a couple of hints:
A) If she got married too young, that was her choice. Legally, it doesn't matter and no one cares.
B) If she married and had a child with a man that cheated on her, that is between the two of them. It doesn't matter in terms of a divorce, getting support, whatever.
C) It is not the job, nor is it the priority, of the US or FL courts to make sure she gets to Turkey. That's her deal. If she moved here and doesn't speak enough English to get by, that was her choice as well. (I myself am not in Turkey and do not plan to be. Ever.) It's nice that you are helping her.
D) Courts are not "free." To file legal papers require filing fees.
E) Lawyers that offer services for free are rare. Try to get free consultations w/family specialists in Orlando. Check the yellow page ads: they usually mention in the ad if they offer a free consultation. Go to the consultation with a list of prepared questions to get the most out of your time. Don't waste time on how young she is, how sad she is, blah blah blah.
F) I don't know what to do about the American citizen child.