We have had some news from my cousin (see http://librarianwithsecrets.blogspot.com/2009/08/mystery.html to know what I'm on about here).
It is all a bit confusing, and I must admit, when it comes to this part of the family, any information from them has always had to be treated with caution as to what was actually the truth and what was what we were supposed to believe.
So, my uncle's visitor stuck to his word and got in touch with my cousin after his return to the US, and she phoned my uncle.
Apparently, her husband went into hiding (probably taking all their money with him plus taking away all her documents so that she could not leave the country) but has since returned; he lives now at his parents' place in the same town as she and her youngest daughter.
At the moment, because she has not got her documents replaced yet, she can not travel, but she wants to come to Germany for good.
The husband sent my uncle an email, asking him for some official confirmation that my cousin is a German citizen (she was born in Beirut and lived in Germany only for a short time), at the same time urging him not to tell her of his request.
My uncle reacted a) by telling him that no way he was going to give him any kind of confirmation and b) by contacting the three German consulates closest to where the husband lives and asking them not to hand out any documents concerning his daughter to the husband, should he request anything from them.
Now, all we can do is wait; I do hope that my cousin will manage to get away from there, if that is what she really wants.
At least she did get in touch with her father, so we know she is still alive.